Release 0.3

Enhancements =========== - Unified Inch Screw Threads Fixes =========== - PCO-1881 internal (minor diameter was too small) - Dpitch problem with G-ext threads Improvements =========== - developer docs - build system - unit tests - user does not need to rotate internal threads by 180 deg anymore to fit external thread !! Incompatibel changes !! ==================== We take the liberty to do this while the major version is still 0: - internal thread is rotated by 180 deg (see improvements). nut() and bolt() are not affected by this
2025-08-06 16:26:40 +02:00 · 2019-11-13 21:17:52 +01:00
parent 49b5786cac
commit 315d3b96fb
22 changed files with 3520 additions and 1056 deletions
--- a/18
+++ b/18
@@ -0,0 +1,18 @@
+.PHONY: design
+design: clean
+	touch design/THREAD_TABLE.csv
+	cat design/BSPP_thread.csv | awk -f design/BSPP_thread.awk >> design/THREAD_TABLE.csv
+	cat design/metric_thread.csv | awk -f design/metric_thread.awk >> design/THREAD_TABLE.csv
+	cat design/PCO_thread.csv | awk -f design/PCO_thread.awk >> design/THREAD_TABLE.csv
+	cat design/UIS_thread.csv | awk -f design/UIS_thread.awk >> design/THREAD_TABLE.csv
+	cat design/THREAD_TABLE.csv | awk -f design/autogenerate.awk > THREAD_TABLE.scad
+
+.PHONY: test
+test:
+	@$(MAKE) -C tests
+
+.PHONY: clean
+clean:
+	rm -f THREAD_TABLE.scad
+	rm -f design/THREAD_TABLE.csv
+
--- a/README.rst
+++ b/README.rst
@@ -27,7 +27,6 @@ Creating a thread is as simple as
 to create a British Standard Pipe parallel external thread. 


-==================================
 Why you may want to use threadlib
 ==================================

@@ -36,11 +35,13 @@ Why you may want to use threadlib
 - configurable higbee arc
 - creates working threads (clearances are left for production tolerances)
 - flexible:
+
  - choose the $fn you need to fit the rest of your design
  - let threadlib tell you the thread specs so you can do with them what *you* want
 - extensible: Add your own threads
- tried and tested in the real world: Um no, not yet. But with your help, it
-  will soon be.
+- tried and tested in the real world: Well, partly. Given the sheer number of
+  threads, this is only possible with *your* help! Any feedback regarding working
+  (or not working) threadlib-threads is appreciated.


 Installation
@@ -62,6 +63,10 @@ Clone threadlib into the folder 'threadlib' inside your OpenSCAD library folder
 Usage
 ===========================

+Before you start: threadlib is designed in millimeters (not meters, not inches).
+Make sure that your units are set accordingly or scale the output of threadlib
+to match the units you use in your project!
+
 To create a bolt (without head) with 5 turns of M4 thread:

 .. code-block:: OpenSCAD
@@ -147,6 +152,9 @@ for addition to threadlib!
 Change Log
 ===========================

+- 0.3: Unified Inch Screw Threads (UNC, UNF, UNEF, 4-UN, 6-UN, 8-UN, 12-UN,
+  16-UN, 20-UN, 28-UN, and 32-UN. Fixed problem with PCO-1881-int. Fixed problem
+  with G-ext threads . New build system. 
 - 0.2: `Metric threads <http://mdmetric.com/tech/M-thead%20600.htm>`__, `PCO-1881 <https://www.bevtech.org/assets/Committees/Packaging-Technology/20/3784253-20.pdf>`__
 - 0.1: Initial release supporting `BSP parallel thread <https://www.amesweb.info/Screws/British-Standard-Pipe-Parallel-Thread-BSPP.aspx>`__

--- a/THREAD_TABLE.scad
+++ b/THREAD_TABLE.scad
--- a/design/BSPP_thread.awk
+++ b/design/BSPP_thread.awk
@@ -0,0 +1,66 @@
+function tan(x) {
+	return(sin(x) / cos(x))
+}
+
+function calculateThreadlibSpecs() {
+	Designator = $1;
+	P = $3;
+	H = P / 2 / tan(phi / 2);
+	DMax = $5;
+	DPitch = $6;
+	DMin = $7;
+	DPitchInt = DPitch + $9 / 2;
+	DPitchExt = DPitch + $10 / 2;
+	DMinInt = DMin + $14 / 2;
+	DMaxExt = DMax + $15 / 2;
+	DSupportExt = DPitchExt - 2 * 5 / 12 * H;
+	DSupportInt = DPitchInt + 2 * 5 / 12 * H;
+	DValleyExt = DPitchExt - 2 * 5 / 12 * H * qOverlap;
+	DValleyInt = DPitchInt + 2 * 5 / 12 * H * qOverlap;
+	DCrestExt = DMaxExt - tan((pi + phi) / 4) / 6 * (1 - sin(phi / 2));
+	DCrestInt = DMinInt + tan((pi + phi) / 4) / 6 * (1 - sin(phi / 2));
+	ZValley = 0.03125 * P;
+	ZCrestExt = (DPitchExt + H - DCrestExt) / 2 * tan(phi / 2);
+	ZCrestInt = (DCrestInt - DPitchInt + H) / 2 * tan(phi / 2);
+}
+
+BEGIN {
+	FS = "\t";
+	pi = atan2(0, -1);
+	deg = pi / 180;
+	phi = 55 * deg;
+	qOverlap = 1.05;
+}
+
+/^[^#]/ {
+	calculateThreadlibSpecs();
+
+	# External thread:
+	printf "G" Designator "-ext,"			# designator
+	printf	P ","					# pitch
+	printf	 "%.4f,", DValleyExt / 2		# Rrot
+	printf	"%.4f,", DSupportExt			# Dsupport
+	printf	0 ","					# r0
+	printf	"%.4f,", -P / 2 + ZValley		# z0
+	printf	0 ","					# r1
+	printf	"%.4f,", +P / 2 - ZValley		# z1
+	printf	"%.4f,", (DCrestExt - DValleyExt) / 2	# r2
+	printf	"%.4f,", +ZCrestExt			# z2
+	printf	"%.4f,", (DCrestExt - DValleyExt) / 2	# r3
+	printf	"%.4f\n", -ZCrestExt;			# z3
+
+	# Internal thread:
+	printf "G" Designator "-int,"			# designator
+	printf	P ","					# pitch
+	printf	 "%.4f,", -DValleyInt / 2		# Rrot
+	printf	"%.4f,", DSupportInt			# Dsupport
+	printf	0 ","					# r0
+	printf	"%.4f,", +P / 2 - ZValley		# z0
+	printf	0 ","					# r1
+	printf	"%.4f,", -P / 2 + ZValley		# z1
+	printf	"%.4f,", -(DCrestInt - DValleyInt) / 2	# r2
+	printf	"%.4f,", -ZCrestInt			# z2
+	printf	"%.4f,", -(DCrestInt - DValleyInt) / 2	# r3
+	printf	"%.4f\n", +ZCrestInt;			# z3
+}
+
--- a/design/BSPP_thread.csv
+++ b/design/BSPP_thread.csv
@@ -0,0 +1,29 @@
+# 	Tolerances on pitch diametera	Tolerance on minor diameter	Tolerance on major diameter
+# 							Tolerances Pitch Diameters		Tol. min. Dia.	Tol. maj. Dia
+# 				Diameters		Int thread TD2	Ext thread Td2		Int thread TD1	Ext thread Td
+#Desig	TPI	Pitch	h	d=D	d2=D2	d1=D1	-Delta	+Delta	-Delta	-Delta	+Delta	-Delta	+Delta	-Delta	+Delta
+#http://mdmetric.com/tech/thddat7.htm
+1/16	28	0.907	0.581	7.723	7.142	6.561	0	0.107	-0.107	-0.214	0	0	0.282	-0.214	0
+1/8	28	0.907	0.581	9.728	9.147	8.566	0	0.107	-0.107	-0.214	0	0	0.282	-0.214	0
+1/4	19	1.337	0.856	13.157	12.301	11.445	0	0.125	-0.125	-0.25	0	0	0.445	-0.25	0
+3/8	19	1.337	0.856	16.662	15.806	14.95	0	0.125	-0.125	-0.25	0	0	0.445	-0.25	0
+1/2	14	1.814	1.162	20.955	19.793	18.631	0	0.142	-0.142	-0.284	0	0	0.541	-0.284	0
+5/8	14	1.814	1.162	22.911	21.749	20.587	0	0.142	-0.142	-0.284	0	0	0.541	-0.284	0
+3/4	14	1.814	1.162	26.441	25.279	24.117	0	0.142	-0.142	-0.284	0	0	0.541	-0.284	0
+7/8	14	1.814	1.162	30.201	29.039	27.877	0	0.142	-0.142	-0.284	0	0	0.541	-0.284	0
+1	11	2.309	1.479	33.249	31.77	30.291	0	0.18	-0.18	-0.36	0	0	0.64	-0.36	0
+1 1/8	11	2.309	1.479	37.897	36.418	34.939	0	0.18	-0.18	-0.36	0	0	0.64	-0.36	0
+1 1/4	11	2.309	1.479	41.91	40.431	38.952	0	0.18	-0.18	-0.36	0	0	0.64	-0.36	0
+1 1/2	11	2.309	1.479	47.803	46.324	44.845	0	0.18	-0.18	-0.36	0	0	0.64	-0.36	0
+1 3/4	11	2.309	1.479	53.746	52.267	50.788	0	0.18	-0.18	-0.36	0	0	0.64	-0.36	0
+2	11	2.309	1.479	59.614	58.135	56.656	0	0.18	-0.18	-0.36	0	0	0.64	-0.36	0
+2 1/4	11	2.309	1.479	65.71	64.231	62.752	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+2 1/2	11	2.309	1.479	75.184	73.705	72.226	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+2 3/4	11	2.309	1.479	81.534	80.055	78.576	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+3	11	2.309	1.479	87.884	86.405	84.926	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+3 1/2	11	2.309	1.479	100.33	98.851	97.372	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+4	11	2.309	1.479	113.03	111.551	110.072	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+4 1/2	11	2.309	1.479	125.73	124.251	122.772	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+5	11	2.309	1.479	138.43	136.951	135.472	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+5 1/2	11	2.309	1.479	151.13	149.651	148.172	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
+6	11	2.309	1.479	163.83	162.351	160.872	0	0.217	-0.217	-0.434	0	0	0.64	-0.434	0
--- a/design/PCO_thread.awk
+++ b/design/PCO_thread.awk
@@ -0,0 +1,4 @@
+/^[^#]/ {
+	print $0;
+}
+
--- a/design/PCO_thread.csv
+++ b/design/PCO_thread.csv
@@ -0,0 +1,3 @@
+# Designator,Pitch,Rrot,Dsupport,r0,z0,r1,z1,r2,z2,r3,z3
+PCO-1881-ext,2.7,11.52381,24.2,0,-0.987894698,0,0.987894698,2.17619,0.604173686,2.17619,-0.195826314
+PCO-1881-int,2.7,-14.406,27.66,0,1.212894698,0,-0.762894698,1.656,-0.470897218,1.656,0.610159990
--- a/design/UIS_thread.awk
+++ b/design/UIS_thread.awk
@@ -0,0 +1,100 @@
+function tan(x) {
+	return(sin(x) / cos(x))
+}
+
+function min(x, y) {
+	if (x < y) return(x)
+	else return(y)
+}
+
+function calculateThreadlibSpecs() {
+	Designator = $1;
+	TPI = $2;
+	D = $3;
+	P = 1 / TPI;
+	H = P / 2 / tan(phi / 2);
+	basicPitchD = D - 3 / 4 * H;
+
+	nfields = split(Designator, fields, "_");
+	tp = fields[1];
+	if (nfields > 2)
+		tp = tp "-" fields[2]
+
+	if (tp=="UNC" || tp=="UNF" || tp=="4-UN" || tp=="6-UN" || tp=="8-UN")
+		LE = D;
+	else
+		LE = 9 * P;
+
+	# external thread:
+	tolPitchD = 0.0015 * D**(1/3) + 0.0015 * sqrt(LE) + 0.015 * P**(2/3);
+	maxPitchD = basicPitchD - 0.300 * tolPitchD;
+	minPitchD = maxPitchD - tolPitchD;
+	centerPitchD = 0.5 * (minPitchD + maxPitchD);
+	RrotExt = centerPitchD / 2 - H / 4;
+	DSupportExt = 2 * RrotExt + 0.01 * H ;
+	RrotExt = RrotExt * inch;
+	DSupportExt = DSupportExt * inch;
+
+	dzCrestExt = P / 16 * inch;
+	dzRootExt = 3 / 8 * P * inch;
+	drRootExt = 0.;
+	drCrestExt = 5 / 8 * H * inch;
+
+	# internal thread:
+	tolPitchD = 1.300 * tolPitchD;
+	minPitchD = basicPitchD;
+	maxPitchD = minPitchD + tolPitchD;
+	centerPitchD = 0.5 * (minPitchD + maxPitchD);
+	RrotInt = -((centerPitchD + H) / 2 - H / 8);
+	DSupportInt = -2 * RrotInt - 0.01 * H;
+	RrotInt = RrotInt * inch;
+	DSupportInt = DSupportInt * inch;
+
+	dzCrestInt = P / 8 * inch;
+	dzRootInt = 7 / 16 * P * inch;
+	drRootInt = 0.;
+	drCrestInt = 5 / 8 * H * inch;
+
+	P = P * inch;
+}
+
+BEGIN {
+	FS = "\t";
+	pi = atan2(0, -1);
+	deg = pi / 180;
+	phi = 60 * deg;
+	inch = 25.4;
+}
+
+/^[^#]/ {
+	calculateThreadlibSpecs();
+
+	# External thread:
+	printf	Designator "-ext,"			# designator
+	printf	P ","					# pitch
+	printf	 "%.4f,", RrotExt			# Rrot
+	printf	"%.4f,", DSupportExt			# Dsupport
+	printf	drRootExt ","				# r0
+	printf	"%.4f,", -dzRootExt			# z0
+	printf	drRootExt ","				# r1
+	printf	"%.4f,", +dzRootExt			# z1
+	printf	"%.4f,", drCrestExt			# r2
+	printf	"%.4f,", +dzCrestExt			# z2
+	printf	"%.4f,", drCrestExt			# r3
+	printf	"%.4f\n", -dzCrestExt;			# z3
+
+	# Internal thread:
+	printf	Designator "-int,"			# designator
+	printf	P ","					# pitch
+	printf	 "%.4f,", RrotInt			# Rrot
+	printf	"%.4f,", DSupportInt			# Dsupport
+	printf	drRootInt ","				# r0
+	printf	"%.4f,", +dzRootInt			# z0
+	printf	drRootInt ","				# r1
+	printf	"%.4f,", -dzRootInt			# z1
+	printf	"%.4f,", drCrestInt			# r2
+	printf	"%.4f,", -dzCrestInt			# z2
+	printf	"%.4f,", drCrestInt			# r3
+	printf	"%.4f\n", +dzCrestInt;			# z3
+}
+
--- a/design/UIS_thread.csv
+++ b/design/UIS_thread.csv
@@ -0,0 +1,392 @@
+# designator	TPI	D
+UNC-#1	64	0.0730
+UNC-#2	56	0.0860
+UNC-#3	48	0.0990
+UNC-#4	40	0.1120
+UNC-#5	40	0.1250
+UNC-#6	32	0.1380
+UNC-#8	32	0.1640
+UNC-#10	24	0.1900
+UNC-#12	24	0.2160
+UNC-1/4	20	0.2500
+UNC-5/16	18	0.3125
+UNC-3/8	16	0.3750
+UNC-7/16	14	0.4375
+UNC-1/2	13	0.5000
+UNC-9/16	12	0.5625
+UNC-5/8	11	0.6250
+UNC-3/4	10	0.7500
+UNC-7/8	9	0.8750
+UNC-1	8	1.0000
+UNC-1 1/8	7	1.1250
+UNC-1 1/4	7	1.2500
+UNC-1 3/8	6	1.3750
+UNC-1 1/2	6	1.5000
+UNC-1 3/4	5	1.7500
+UNC-2	4	2.0000
+UNC-2 1/4	4	2.2500
+UNC-2 1/2	4	2.5000
+UNC-2 3/4	4	2.7500
+UNC-3	4	3.0000
+UNC-3 1/4	4	3.2500
+UNC-3 1/2	4	3.5000
+UNC-3 3/4	4	3.7500
+UNC-4	4	4.0000
+UNF-#0	80	0.0600
+UNF-#1	72	0.0730
+UNF-#2	64	0.0860
+UNF-#3	56	0.0990
+UNF-#4	48	0.1120
+UNF-#5	44	0.1250
+UNF-#6	40	0.1380
+UNF-#8	36	0.1640
+UNF-#10	32	0.1900
+UNF-#12	28	0.2160
+UNF-1/4	28	0.2500
+UNF-5/16	24	0.3125
+UNF-3/8	24	0.3750
+UNF-7/16	20	0.4375
+UNF-1/2	20	0.5000
+UNF-9/16	18	0.5625
+UNF-5/8	18	0.6250
+UNF-3/4	16	0.7500
+UNF-7/8	14	0.8750
+UNF-1	12	1.0000
+UNF-1 1/8	12	1.1250
+UNF-1 1/4	12	1.2500
+UNF-1 3/8	12	1.3750
+UNF-1 1/2	12	1.5000
+UNEF-#12	32	0.2160
+UNEF-1/4	32	0.2500
+UNEF-5/16	32	0.3125
+UNEF-3/8	32	0.3750
+UNEF-7/16	28	0.4375
+UNEF-1/2	28	0.5000
+UNEF-9/16	24	0.5625
+UNEF-5/8	24	0.6250
+UNEF-11/16	24	0.6875
+UNEF-3/4	20	0.7500
+UNEF-13/16	20	0.8125
+UNEF-7/8	20	0.8750
+UNEF-15/16	20	0.9375
+UNEF-1	20	1.0000
+UNEF-1 1/16	18	1.0625
+UNEF-1 1/8	18	1.1250
+UNEF-1 3/16	18	1.1875
+UNEF-1 1/4	18	1.2500
+UNEF-1 5/16	18	1.3125
+UNEF-1 3/8	18	1.3750
+UNEF-1 7/16	18	1.4375
+UNEF-1 1/2	18	1.5000
+UNEF-1 9/16	18	1.5625
+UNEF-1 5/8	18	1.6250
+UNEF-1 11/16	18	1.6875
+4-UN-2 1/2	4	2.5000
+4-UN-2 5/8	4	2.6250
+4-UN-2 3/4	4	2.7500
+4-UN-2 7/8	4	2.8750
+4-UN-3	4	3.0000
+4-UN-3 1/8	4	3.1250
+4-UN-3 1/4	4	3.2500
+4-UN-3 3/8	4	3.3750
+4-UN-3 1/2	4	3.5000
+4-UN-3 5/8	4	3.6250
+4-UN-3 3/4	4	3.7500
+4-UN-3 7/8	4	3.8750
+4-UN-4	4	4.0000
+4-UN-4 1/8	4	4.1250
+4-UN-4 1/4	4	4.2500
+4-UN-4 3/8	4	4.3750
+4-UN-4 1/2	4	4.5000
+4-UN-4 5/8	4	4.6250
+4-UN-4 3/4	4	4.7500
+4-UN-4 7/8	4	4.8750
+4-UN-5	4	5.0000
+4-UN-5 1/8	4	5.1250
+4-UN-5 1/4	4	5.2500
+4-UN-5 3/8	4	5.3750
+4-UN-5 1/2	4	5.5000
+4-UN-5 5/8	4	5.6250
+4-UN-5 3/4	4	5.7500
+4-UN-5 7/8	4	5.8750
+4-UN-6	4	6.0000
+6-UN-1 3/8	6	1.3750
+6-UN-1 7/16	6	1.4375
+6-UN-1 1/2	6	1.5000
+6-UN-1 9/16	6	1.5625
+6-UN-1 5/8	6	1.6250
+6-UN-1 11/16	6	1.6875
+6-UN-1 3/4	6	1.7500
+6-UN-1 13/16	6	1.8125
+6-UN-1 7/8	6	1.8750
+6-UN-1 15/16	6	1.9375
+6-UN-2	6	2.0000
+6-UN-2 1/8	6	2.1250
+6-UN-2 1/4	6	2.2500
+6-UN-2 3/8	6	2.3750
+6-UN-2 1/2	6	2.5000
+6-UN-2 5/8	6	2.6250
+6-UN-2 3/4	6	2.7500
+6-UN-2 7/8	6	2.8750
+6-UN-3	6	3.0000
+6-UN-3 1/8	6	3.1250
+6-UN-3 1/4	6	3.2500
+6-UN-3 3/8	6	3.3750
+6-UN-3 1/2	6	3.5000
+6-UN-3 5/8	6	3.6250
+6-UN-3 3/4	6	3.7500
+6-UN-3 7/8	6	3.8750
+6-UN-4	6	4.0000
+6-UN-4 1/8	6	4.1250
+6-UN-4 1/4	6	4.2500
+6-UN-4 3/8	6	4.3750
+6-UN-4 1/2	6	4.5000
+6-UN-4 5/8	6	4.6250
+6-UN-4 3/4	6	4.7500
+6-UN-4 7/8	6	4.8750
+6-UN-5	6	5.0000
+6-UN-5 1/8	6	5.1250
+6-UN-5 1/4	6	5.2500
+6-UN-5 3/8	6	5.3750
+6-UN-5 1/2	6	5.5000
+6-UN-5 5/8	6	5.6250
+6-UN-5 3/4	6	5.7500
+6-UN-5 7/8	6	5.8750
+6-UN-6	6	6.0000
+8-UN-1	8	1.0000
+8-UN-1 1/16	8	1.0625
+8-UN-1 1/8	8	1.1250
+8-UN-1 3/16	8	1.1875
+8-UN-1 1/4	8	1.2500
+8-UN-1 5/16	8	1.3125
+8-UN-1 3/8	8	1.3750
+8-UN-1 7/16	8	1.4375
+8-UN-1 1/2	8	1.5000
+8-UN-1 9/16	8	1.5625
+8-UN-1 5/8	8	1.6250
+8-UN-1 11/16	8	1.6875
+8-UN-1 3/4	8	1.7500
+8-UN-1 13/16	8	1.8125
+8-UN-1 7/8	8	1.8750
+8-UN-1 15/16	8	1.9375
+8-UN-2	8	2.0000
+8-UN-2 1/8	8	2.1250
+8-UN-2 1/4	8	2.2500
+8-UN-2 3/8	8	2.3750
+8-UN-2 1/2	8	2.5000
+8-UN-2 5/8	8	2.6250
+8-UN-2 3/4	8	2.7500
+8-UN-2 7/8	8	2.8750
+8-UN-3	8	3.0000
+8-UN-3 1/8	8	3.1250
+8-UN-3 1/4	8	3.2500
+8-UN-3 3/8	8	3.3750
+8-UN-3 1/2	8	3.5000
+8-UN-3 5/8	8	3.6250
+8-UN-3 3/4	8	3.7500
+8-UN-3 7/8	8	3.8750
+8-UN-4	8	4.0000
+8-UN-4 1/8	8	4.1250
+8-UN-4 1/4	8	4.2500
+8-UN-4 3/8	8	4.3750
+8-UN-4 1/2	8	4.5000
+8-UN-4 5/8	8	4.6250
+8-UN-4 3/4	8	4.7500
+8-UN-4 7/8	8	4.8750
+8-UN-5	8	5.0000
+8-UN-5 1/8	8	5.1250
+8-UN-5 1/4	8	5.2500
+8-UN-5 3/8	8	5.3750
+8-UN-5 1/2	8	5.5000
+8-UN-5 5/8	8	5.6250
+8-UN-5 3/4	8	5.7500
+8-UN-5 7/8	8	5.8750
+8-UN-6	8	6.0000
+12-UN-9/16	12	0.5625
+12-UN-5/8	12	0.6250
+12-UN-11/16	12	0.6875
+12-UN-3/4	12	0.7500
+12-UN-13/16	12	0.8125
+12-UN-7/8	12	0.8750
+12-UN-15/16	12	0.9375
+12-UN-1	12	1.0000
+12-UN-1 1/16	12	1.0625
+12-UN-1 1/8	12	1.1250
+12-UN-1 3/16	12	1.1875
+12-UN-1 1/4	12	1.2500
+12-UN-1 5/16	12	1.3125
+12-UN-1 3/8	12	1.3750
+12-UN-1 7/16	12	1.4375
+12-UN-1 1/2	12	1.5000
+12-UN-1 9/16	12	1.5625
+12-UN-1 5/8	12	1.6250
+12-UN-1 11/16	12	1.6875
+12-UN-1 3/4	12	1.7500
+12-UN-1 13/16	12	1.8125
+12-UN-1 7/8	12	1.8750
+12-UN-1 15/16	12	1.9375
+12-UN-2	12	2.0000
+12-UN-2 1/8	12	2.1250
+12-UN-2 1/4	12	2.2500
+12-UN-2 3/8	12	2.3750
+12-UN-2 1/2	12	2.5000
+12-UN-2 5/8	12	2.6250
+12-UN-2 3/4	12	2.7500
+12-UN-2 7/8	12	2.8750
+12-UN-3	12	3.0000
+12-UN-3 1/8	12	3.1250
+12-UN-3 1/4	12	3.2500
+12-UN-3 3/8	12	3.3750
+12-UN-3 1/2	12	3.5000
+12-UN-3 5/8	12	3.6250
+12-UN-3 3/4	12	3.7500
+12-UN-3 7/8	12	3.8750
+12-UN-4	12	4.0000
+12-UN-4 1/8	12	4.1250
+12-UN-4 1/4	12	4.2500
+12-UN-4 3/8	12	4.3750
+12-UN-4 1/2	12	4.5000
+12-UN-4 5/8	12	4.6250
+12-UN-4 3/4	12	4.7500
+12-UN-4 7/8	12	4.8750
+12-UN-5	12	5.0000
+12-UN-5 1/8	12	5.1250
+12-UN-5 1/4	12	5.2500
+12-UN-5 3/8	12	5.3750
+12-UN-5 1/2	12	5.5000
+12-UN-5 5/8	12	5.6250
+12-UN-5 3/4	12	5.7500
+12-UN-5 7/8	12	5.8750
+12-UN-6	12	6.0000
+16-UN-3/8	16	0.3750
+16-UN-7/16	16	0.4375
+16-UN-1/2	16	0.5000
+16-UN-9/16	16	0.5625
+16-UN-5/8	16	0.6250
+16-UN-11/16	16	0.6875
+16-UN-3/4	16	0.7500
+16-UN-13/16	16	0.8125
+16-UN-7/8	16	0.8750
+16-UN-15/16	16	0.9375
+16-UN-1	16	1.0000
+16-UN-1 1/16	16	1.0625
+16-UN-1 1/8	16	1.1250
+16-UN-1 3/16	16	1.1875
+16-UN-1 1/4	16	1.2500
+16-UN-1 5/16	16	1.3125
+16-UN-1 3/8	16	1.3750
+16-UN-1 7/16	16	1.4375
+16-UN-1 1/2	16	1.5000
+16-UN-1 9/16	16	1.5625
+16-UN-1 5/8	16	1.6250
+16-UN-1 11/16	16	1.6875
+16-UN-1 3/4	16	1.7500
+16-UN-1 13/16	16	1.8125
+16-UN-1 7/8	16	1.8750
+16-UN-1 15/16	16	1.9375
+16-UN-2	16	2.0000
+16-UN-2 1/8	16	2.1250
+16-UN-2 1/4	16	2.2500
+16-UN-2 3/8	16	2.3750
+16-UN-2 1/2	16	2.5000
+16-UN-2 5/8	16	2.6250
+16-UN-2 3/4	16	2.7500
+16-UN-2 7/8	16	2.8750
+16-UN-3	16	3.0000
+16-UN-3 1/8	16	3.1250
+16-UN-3 1/4	16	3.2500
+16-UN-3 3/8	16	3.3750
+16-UN-3 1/2	16	3.5000
+16-UN-3 5/8	16	3.6250
+16-UN-3 3/4	16	3.7500
+16-UN-3 7/8	16	3.8750
+16-UN-4	16	4.0000
+16-UN-4 1/8	16	4.1250
+16-UN-4 1/4	16	4.2500
+16-UN-4 3/8	16	4.3750
+16-UN-4 1/2	16	4.5000
+16-UN-4 5/8	16	4.6250
+16-UN-4 3/4	16	4.7500
+16-UN-4 7/8	16	4.8750
+16-UN-5	16	5.0000
+16-UN-5 1/8	16	5.1250
+16-UN-5 1/4	16	5.2500
+16-UN-5 3/8	16	5.3750
+16-UN-5 1/2	16	5.5000
+16-UN-5 5/8	16	5.6250
+16-UN-5 3/4	16	5.7500
+16-UN-5 7/8	16	5.8750
+16-UN-6	16	6.0000
+20-UN-1/4	20	0.2500
+20-UN-5/16	20	0.3125
+20-UN-3/8	20	0.3750
+20-UN-7/16	20	0.4375
+20-UN-1/2	20	0.5000
+20-UN-9/16	20	0.5625
+20-UN-5/8	20	0.6250
+20-UN-11/16	20	0.6875
+20-UN-3/4	20	0.7500
+20-UN-13/16	20	0.8125
+20-UN-7/8	20	0.8750
+20-UN-15/16	20	0.9375
+20-UN-1	20	1.0000
+20-UN-1 1/16	20	1.0625
+20-UN-1 1/8	20	1.1250
+20-UN-1 3/16	20	1.1875
+20-UN-1 1/4	20	1.2500
+20-UN-1 5/16	20	1.3125
+20-UN-1 3/8	20	1.3750
+20-UN-1 7/16	20	1.4375
+20-UN-1 1/2	20	1.5000
+20-UN-1 9/16	20	1.5625
+20-UN-1 5/8	20	1.6250
+20-UN-1 11/16	20	1.6875
+20-UN-1 3/4	20	1.7500
+20-UN-1 13/16	20	1.8125
+20-UN-1 7/8	20	1.8750
+20-UN-1 15/16	20	1.9375
+20-UN-2	20	2.0000
+20-UN-2 1/8	20	2.1250
+20-UN-2 1/4	20	2.2500
+20-UN-2 3/8	20	2.3750
+20-UN-2 1/2	20	2.5000
+20-UN-2 5/8	20	2.6250
+20-UN-2 3/4	20	2.7500
+20-UN-2 7/8	20	2.8750
+20-UN-3	20	3.0000
+28-UN-#12	28	0.2160
+28-UN-1/4	28	0.2500
+28-UN-5/16	28	0.3125
+28-UN-3/8	28	0.3750
+28-UN-7/16	28	0.4375
+28-UN-1/2	28	0.5000
+28-UN-9/16	28	0.5625
+28-UN-5/8	28	0.6250
+28-UN-11/16	28	0.6875
+28-UN-3/4	28	0.7500
+28-UN-13/16	28	0.8125
+28-UN-7/8	28	0.8750
+28-UN-15/16	28	0.9375
+28-UN-1	28	1.0000
+28-UN-1 1/16	28	1.0625
+28-UN-1 1/8	28	1.1250
+28-UN-1 3/16	28	1.1875
+28-UN-1 1/4	28	1.2500
+28-UN-1 5/16	28	1.3125
+28-UN-1 3/8	28	1.3750
+28-UN-1 7/16	28	1.4375
+28-UN-1 1/2	28	1.5000
+32-UN-#6	32	0.1380
+32-UN-#8	32	0.1640
+32-UN-#10	32	0.1900
+32-UN-#12	32	0.2160
+32-UN-1/4	32	0.2500
+32-UN-5/16	32	0.3125
+32-UN-3/8	32	0.3750
+32-UN-7/16	32	0.4375
+32-UN-1/2	32	0.5000
+32-UN-9/16	32	0.5625
+32-UN-5/8	32	0.6250
+32-UN-11/16	32	0.6875
+32-UN-3/4	32	0.7500
+32-UN-13/16	32	0.8125
--- a/design/autogenerate.awk
+++ b/design/autogenerate.awk
@@ -1,6 +1,14 @@
-BEGIN	{ FS = "," ; RS = "\n"
-	  print "/* This script is auto-generated - do not edit"
-	  print "   :License: 3-clause BSD. See LICENSE. */"
-	  printf "\nTHREAD_TABLE = [" }
-/^[GPM]/	{ print "[\"" $1 "\", [" $2 ", " $3 ", " $4 ", [[" $5 ", " $6 "], [" $7 ", " $8 "], [" $9 ", " $10 "], [" $11 ", " $12 "]]]],"}
+BEGIN	{
+	FS = ","; 
+	print "/* This script is auto-generated - do not edit"
+	print "   :License: 3-clause BSD. See LICENSE. */"
+	printf "\nTHREAD_TABLE = ["
+}
+
+ //	{
+	gsub(/\r/, "");
+	print "[\"" $1 "\", [" $2 ", " $3 ", " $4 ", [[" $5 ", " $6 "], [" \
+	      $7 ", " $8 "], [" $9 ", " $10 "], [" $11 ", " $12 "]]]],";
+}
+
 END	{ print "];" }
--- a/design/metric_thread.awk
+++ b/design/metric_thread.awk
@@ -0,0 +1,71 @@
+function tan(x) {
+	return(sin(x) / cos(x))
+}
+
+function min(x, y) {
+	if (x < y) return(x)
+	else return(y)
+}
+
+function calculateThreadlibSpecs() {
+	Designator = $3;
+	P = $4;
+	H = P / 2 / tan(phi / 2);
+	DPitchExt = ($8 + $9) / 2;
+	DSupportExt = ($10 + $11) / 2;
+	DValleyExt = $11;
+	DCrestExt = ($6 + $7) / 2;
+	ZValleyExt = (DPitchExt + H - DValleyExt) / 2 * tan(phi / 2); 
+	ZCrestExt = (DPitchExt + H - DCrestExt) / 2 * tan(phi / 2);
+
+	DPitchInt = ($15 + $16) / 2;
+	DSupportInt = ($17 + $18) / 2;
+	DValleyInt = $18;
+	DCrestInt = ($13 + $14) / 2;
+	# for some reason, the data sometimes has dRMax > H. We have to fix this:
+	dRMax = min((DValleyInt - DPitchInt + H) / 2, 0.99 * H);
+	DValleyInt = DPitchInt - H + 2 * dRMax;
+	# now, continue as usual
+	ZValleyInt = dRMax * tan(phi / 2);
+	ZCrestInt = (DCrestInt - DPitchInt + H) / 2 * tan(phi / 2);
+}
+
+BEGIN {
+	FS = "\t";
+	pi = atan2(0, -1);
+	deg = pi / 180;
+	phi = 60 * deg;
+}
+
+/^[^#]/ {
+	calculateThreadlibSpecs();
+
+	# External thread:
+	printf	Designator "-ext,"			# designator
+	printf	P ","					# pitch
+	printf	 "%.4f,", DValleyExt / 2		# Rrot
+	printf	"%.4f,", DSupportExt			# Dsupport
+	printf	0 ","					# r0
+	printf	"%.4f,", -ZValleyExt			# z0
+	printf	0 ","					# r1
+	printf	"%.4f,", +ZValleyExt			# z1
+	printf	"%.4f,", (DCrestExt - DValleyExt) / 2	# r2
+	printf	"%.4f,", +ZCrestExt			# z2
+	printf	"%.4f,", (DCrestExt - DValleyExt) / 2	# r3
+	printf	"%.4f\n", -ZCrestExt;			# z3
+
+	# Internal thread:
+	printf	Designator "-int,"			# designator
+	printf	P ","					# pitch
+	printf	 "%.4f,", -DValleyInt / 2		# Rrot
+	printf	"%.4f,", DSupportInt			# Dsupport
+	printf	0 ","					# r0
+	printf	"%.4f,", +ZValleyInt			# z0
+	printf	0 ","					# r1
+	printf	"%.4f,", -ZValleyInt			# z1
+	printf	"%.4f,", -(DCrestInt - DValleyInt) / 2	# r2
+	printf	"%.4f,", -ZCrestInt			# z2
+	printf	"%.4f,", -(DCrestInt - DValleyInt) / 2	# r3
+	printf	"%.4f\n", +ZCrestInt;			# z3
+}
+
--- a/design/metric_thread.csv
+++ b/design/metric_thread.csv
@@ -0,0 +1,501 @@
+# 	ISO Metric profile			External (bolt thread)					Internal (nut thread)					Basic mm
+#							Major Dia d=D	Pitch Dia d2=D2	Minor Dia d3		Minor Dia D1	Pitch Dia d2=D2	Major Dia d=D	
+#Size	Designation	Simple Desig.	Pitch	Class	max	min	max	min	max	min	Class	min	max	min	max	min	max	Tap Drill
+#1	2		3		4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19
+0.25	M0.25x0.075	M0.25x0.075	0.075	6g	0.25	0.235	0.201	0.187	0.16	0.14	6H	0.172	0.208	0.201	0.215	0.255	0.276	0.175
+0.3	M0.3x0.08	M0.3x0.08	0.08	6g	0.3	0.284	0.248	0.234	0.204	0.183	6H	0.217	0.254	0.248	0.262	0.306	0.327	0.22
+0.3	M0.3x0.09	M0.3x0.09	0.09	6g	0.3	0.283	0.242	0.226	0.192	0.17	6H	0.206	0.247	0.242	0.257	0.306	0.33	0.21
+0.35	M0.35x0.09	M0.35x0.09	0.09	6g	0.35	0.333	0.292	0.277	0.242	0.22	6H	0.256	0.297	0.292	0.307	0.356	0.38	0.26
+0.4	M0.4x0.1	M0.4x0.1	0.1	6g	0.4	0.382	0.335	0.319	0.28	0.256	6H	0.296	0.34	0.335	0.351	0.407	0.432	0.3
+0.45	M0.45x0.1	M0.45x0.1	0.1	6g	0.45	0.432	0.385	0.369	0.33	0.306	6H	0.346	0.39	0.385	0.401	0.457	0.482	0.35
+0.5	M0.5x0.125	M0.5x0.125	0.125	6g	0.5	0.479	0.419	0.401	0.35	0.322	6H	0.37	0.422	0.419	0.437	0.509	0.538	0.375
+0.55	M0.55x0.125	M0.55x0.125	0.125	6g	0.55	0.529	0.469	0.451	0.4	0.372	6H	0.42	0.472	0.469	0.487	0.559	0.588	0.425
+0.6	M0.6x0.15	M0.6x0.15	0.15	6g	0.6	0.576	0.503	0.483	0.42	0.388	6H	0.444	0.504	0.503	0.523	0.611	0.644	0.45
+0.7	M0.7x0.175	M0.7x0.175	0.175	6g	0.7	0.673	0.586	0.564	0.49	0.454	6H	0.518	0.586	0.586	0.608	0.713	0.75	0.525
+0.8	M0.8x0.2	M0.8x0.2	0.2	6g	0.8	0.77	0.67	0.646	0.56	0.52	6H	0.592	0.668	0.67	0.694	0.814	0.856	0.6
+0.9	M0.9x0.225	M0.9x0.225	0.225	6g	0.9	0.867	0.754	0.728	0.63	0.586	6H	0.666	0.75	0.754	0.78	0.916	0.962	0.675
+1	M1x0.25	M1	0.25	6g	0.982	0.915	0.82	0.767	0.711	0.613	6H	0.729	0.809	0.838	0.909	1	1.107	0.75
+1	M1x0.2	M1x0.2	0.2	6g	0.983	0.927	0.853	0.805	0.766	0.682	6H	0.783	0.858	0.87	0.933	1	1.092	0.8
+1.1	M1.1x0.25	M1.1x0.25	0.25	6g	1.082	1.015	0.92	0.867	0.811	0.713	6H	0.829	0.909	0.938	1.009	1.1	1.207	0.85
+1.1	M1.1x0.2	M1.1x0.2	0.2	6g	1.083	1.027	0.953	0.905	0.866	0.782	6H	0.883	0.958	0.97	1.033	1.1	1.192	0.9
+1.2	M1.2x0.25	M1.2	0.25	6g	1.182	1.115	1.02	0.967	0.911	0.813	6H	0.929	1.009	1.038	1.109	1.2	1.307	0.95
+1.2	M1.2x0.2	M1.2x0.2	0.2	6g	1.183	1.127	1.053	1.005	0.966	0.882	6H	0.983	1.058	1.07	1.133	1.2	1.292	1
+1.4	M1.4x0.3	M1.4	0.3	6g	1.383	1.308	1.253	1.193	1.166	1.07	6H	1.183	1.258	1.27	1.35	1.4	1.509	1.1
+1.4	M1.4x0.2	M1.4x0.2	0.2	6g	1.383	1.327	1.253	1.205	1.166	1.082	6H	1.183	1.258	1.27	1.333	1.4	1.492	1.2
+1.6	M1.6x0.35	M1.6	0.35	6g	1.581	1.496	1.354	1.291	1.202	1.075	6H	1.221	1.321	1.373	1.458	1.6	1.736	1.25
+1.6	M1.6x0.3	M1.6x0.3	0.3	6g	1.582	1.507	1.387	1.342	1.257	1.157	6H	1.275	1.36	1.405	1.465	1.6	1.703	1.3
+1.6	M1.6x0.2	M1.6x0.2	0.2	6g	1.583	1.527	1.453	1.403	1.366	1.28	6H	1.383	1.458	1.47	1.537	1.6	1.696	1.4
+1.7	M1.7x0.35	M1.7x0.35	0.35	6g	1.681	1.596	1.454	1.391	1.302	1.175	6H	1.321	1.421	1.473	1.558	1.7	1.836	1.35
+1.8	M1.8x0.35	M1.8	0.35	6g	1.781	1.696	1.554	1.491	1.402	1.275	6H	1.421	1.521	1.573	1.658	1.8	1.936	1.45
+1.8	M1.8x0.2	M1.8x0.2	0.2	6g	1.783	1.727	1.653	1.603	1.566	1.48	6H	1.583	1.658	1.67	1.737	1.8	1.896	1.6
+2	M2x0.4	M2	0.4	6g	1.981	1.886	1.721	1.654	1.548	1.408	6H	1.567	1.679	1.74	1.83	2	2.148	1.6
+2	M2x0.25	M2x0.25	0.25	6g	1.982	1.915	1.82	1.764	1.711	1.61	6H	1.729	1.809	1.838	1.913	2	2.111	1.75
+2.2	M2.2x0.45	M2.2	0.45	6g	2.18	2.08	1.888	1.817	1.693	1.54	6H	1.713	1.838	1.908	2.003	2.2	2.36	1.75
+2.2	M2.2x0.25	M2.2x0.25	0.25	6g	2.182	2.115	2.02	1.964	1.911	1.81	6H	1.929	2.009	2.038	2.113	2.2	2.311	1.95
+2.3	M2.3x0.45	M2.3x0.45	0.45	6g	2.28	2.18	1.988	1.917	1.793	1.64	6H	1.813	1.938	2.008	2.103	2.3	2.46	1.85
+2.3	M2.3x0.4	M2.3x0.4	0.4	6g	2.281	2.186	2.021	1.954	1.848	1.708	6H	1.867	1.979	2.04	2.13	2.3	2.448	1.9
+2.5	M2.5x0.45	M2.5	0.45	6g	2.48	2.38	2.188	2.117	1.993	1.84	6H	2.013	2.138	2.208	2.303	2.5	2.66	2.05
+2.5	M2.5x0.35	M2.5x0.35	0.35	6g	2.481	2.396	2.254	2.191	2.102	1.975	6H	2.121	2.221	2.273	2.358	2.5	2.636	2.15
+2.6	M2.6x0.45	M2.6x0.45	0.45	6g	2.58	2.48	2.288	2.217	2.093	1.94	6H	2.113	2.238	2.308	2.393	2.6	2.75	2.15
+3	M3x0.5	M3	0.5	6g	2.98	2.874	2.655	2.58	2.439	2.272	6H	2.459	2.599	2.675	2.775	3	3.172	2.5
+3	M3x0.35	M3x0.35	0.35	6g	2.981	2.896	2.754	2.687	2.602	2.471	6H	2.621	2.721	2.773	2.863	3	3.141	2.65
+3.5	M3.5x0.6	M3.5	0.6	6g	3.479	3.354	3.089	3.004	2.829	2.635	6H	2.85	3.01	3.11	3.222	3.5	3.699	2.9
+3.5	M3.5x0.35	M3.5x0.35	0.35	6g	3.481	3.396	3.254	3.187	3.102	2.971	6H	3.121	3.221	3.273	3.363	3.5	3.641	3.15
+4	M4x0.7	M4	0.7	6g	3.978	3.838	3.523	3.433	3.22	3.002	6H	3.242	3.422	3.545	3.663	4	4.219	3.3
+4	M4x0.5	M4x0.5	0.5	6g	3.98	3.874	3.655	3.58	3.439	3.272	6H	3.459	3.599	3.675	3.775	4	4.172	3.5
+4.5	M4.5x0.75	M4.5x0.75	0.75	6g	4.478	4.338	3.991	3.901	3.666	3.439	6H	3.688	3.878	4.013	4.131	4.5	4.726	3.75
+4.5	M4.5x0.5	M4.5x0.5	0.5	6g	4.48	4.374	4.155	4.08	3.939	3.772	6H	3.959	4.099	4.175	4.275	4.5	4.672	4
+5	M5x0.8	M5	0.8	6g	4.976	4.826	4.456	4.361	4.11	3.869	6H	4.134	4.334	4.48	4.605	5	5.24	4.2
+5	M5x0.5	M5x0.5	0.5	6g	4.98	4.874	4.655	4.58	4.439	4.272	6H	4.459	4.599	4.675	4.775	5	5.172	4.5
+5.5	M5.5x0.5	M5.5x0.5	0.5	6g	5.48	5.374	5.155	5.065	4.939	4.757	6H	4.959	5.099	5.175	5.295	5.5	5.692	5
+6	M6x1	M6	1	6g	5.974	5.794	5.324	5.212	4.891	4.596	6H	4.917	5.153	5.35	5.5	6	6.294	5
+6	M6x0.8	M6x0.8	0.8	6g	5.976	5.826	5.456	5.376	5.11	4.884	6H	5.134	5.334	5.48	5.586	6	6.221	5.2
+6	M6x0.75	M6x0.75	0.75	6g	5.978	5.838	5.491	5.391	5.166	4.929	6H	5.188	5.378	5.513	5.645	6	6.24	5.25
+6	M6x0.7	M6x0.7	0.7	6g	5.978	5.838	5.523	5.428	5.22	4.997	6H	5.242	5.422	5.545	5.671	6	6.226	5.3
+6	M6x0.5	M6x0.5	0.5	6g	5.98	5.874	5.655	5.57	5.439	5.262	6H	5.459	5.599	5.675	5.787	6	6.184	5.5
+7	M7x1	M7	1	6g	6.974	6.794	6.324	6.212	5.891	5.596	6H	5.917	6.153	6.35	6.5	7	7.294	6
+7	M7x0.75	M7x0.75	0.75	6g	6.978	6.838	6.491	6.391	6.166	5.929	6H	6.188	6.378	6.513	6.645	7	7.24	6.25
+7	M7x0.5	M7x0.5	0.5	6g	6.98	6.874	6.655	6.57	6.439	6.262	6H	6.459	6.599	6.675	6.787	7	7.184	6.5
+8	M8x1.25	M8	1.25	6g	7.972	7.76	7.16	7.042	6.619	6.272	6H	6.647	6.912	7.188	7.348	8	8.34	6.75
+8	M8x1	M8x1	1	6g	7.974	7.794	7.324	7.212	6.891	6.596	6H	6.917	7.153	7.35	7.5	8	8.294	7
+8	M8x0.8	M8x0.8	0.8	6g	7.976	7.826	7.456	7.35	7.11	6.858	6H	7.134	7.334	7.48	7.62	8	8.255	7.2
+8	M8x0.75	M8x0.75	0.75	6g	7.978	7.838	7.491	7.391	7.166	6.929	6H	7.188	7.378	7.513	7.645	8	8.24	7.25
+8	M8x0.5	M8x0.5	0.5	6g	7.98	7.874	7.655	7.57	7.439	7.262	6H	7.459	7.599	7.675	7.787	8	8.184	7.5
+9	M9x1.25	M9x1.25	1.25	6g	8.972	8.76	8.16	8.042	7.619	7.272	6H	7.647	7.912	8.188	8.348	9	9.34	7.75
+9	M9x1	M9x1	1	6g	8.974	8.794	8.324	8.212	7.891	7.596	6H	7.917	8.153	8.35	8.498	9	9.292	8
+9	M9x0.75	M9x0.75	0.75	6g	8.978	8.838	8.491	8.391	8.166	7.929	6H	8.188	8.378	8.513	8.645	9	9.24	8.25
+9	M9x0.5	M9x0.5	0.5	6g	8.98	8.874	8.655	8.57	8.439	8.262	6H	8.459	8.599	8.675	8.787	9	9.184	8.5
+10	M10x1.5	M10	1.5	6g	9.968	9.732	8.994	8.862	8.344	7.938	6H	8.376	8.676	9.026	9.206	10	10.396	8.5
+10	M10x1.25	M10x1.25	1.25	6g	9.972	9.76	9.16	9.042	8.619	8.272	6H	8.647	8.912	9.188	9.348	10	10.34	8.75
+10	M10x1.12	M10x1.12	1.12	6g	9.973	9.783	9.246	9.128	8.761	8.438	6H	8.788	9.038	9.273	9.433	10	10.322	8.88
+10	M10x1	M10x1	1	6g	9.974	9.794	9.324	9.212	8.891	8.596	6H	8.917	9.153	9.35	9.5	10	10.294	9
+10	M10x0.75	M10x0.75	0.75	6g	9.978	9.838	9.491	9.391	9.166	8.929	6H	9.188	9.378	9.513	9.645	10	10.24	9.25
+10	M10x0.5	M10x0.5	0.5	6g	9.98	9.874	9.655	9.57	9.439	9.262	6H	9.459	9.599	9.675	9.787	10	10.184	9.5
+11	M11x1.5	M11x1.5	1.5	6g	10.97	10.73	9.994	9.862	9.344	8.938	6H	9.376	9.676	10.026	10.196	11	11.387	9.5
+11	M11x1	M11x1	1	6g	10.97	10.79	10.32	10.21	9.891	9.596	6H	9.917	10.153	10.35	10.5	11	11.294	10
+11	M11x0.75	M11x0.75	0.75	6g	10.98	10.84	10.49	10.39	10.166	9.929	6H	10.188	10.378	10.513	10.645	11	11.24	10.25
+11	M11x0.5	M11x0.5	0.5	6g	10.98	10.87	10.66	10.57	10.439	10.262	6H	10.459	10.599	10.675	10.787	11	11.184	10.5
+12	M12x1.75	M12	1.75	6g	11.97	11.7	10.83	10.68	10.072	9.601	6H	10.106	10.441	10.863	11.063	12	12.453	10.25
+12	M12x1.5	M12x1.5	1.5	6g	11.97	11.73	10.99	10.85	10.344	9.93	6H	10.376	10.676	11.026	11.216	12	12.406	10.5
+12	M12x1.25	M12x1.25	1.25	6g	11.97	11.76	11.16	11.03	10.619	10.258	6H	10.647	10.912	11.188	11.368	12	12.36	10.75
+12	M12x1	M12x1	1	6g	11.97	11.79	11.32	11.21	10.891	10.59	6H	10.917	11.153	11.35	11.51	12	12.304	11
+12	M12x0.75	M12x0.75	0.75	6g	11.98	11.84	11.49	11.39	11.166	10.923	6H	11.188	11.378	11.513	11.653	12	12.248	11.25
+12	M12x0.5	M12x0.5	0.5	6g	11.98	11.87	11.66	11.57	11.439	11.257	6H	11.459	11.599	11.675	11.795	12	12.192	11.5
+14	M14x2	M14	2	6g	13.96	13.68	12.66	12.5	11.797	11.271	6H	11.835	12.21	12.701	12.913	14	14.501	12
+14	M14x1.5	M14x1.5	1.5	6g	13.97	13.73	12.99	12.85	12.344	11.93	6H	12.376	12.676	13.026	13.216	14	14.406	12.5
+14	M14x1.25	M14x1.25	1.25	6g	13.97	13.76	13.16	13.03	12.619	12.258	6H	12.647	12.912	13.188	13.358	14	14.35	12.75
+14	M14x1	M14x1	1	6g	13.97	13.79	13.32	13.21	12.891	12.59	6H	12.917	13.153	13.35	13.51	14	14.304	13
+14	M14x0.75	M14x0.75	0.75	6g	13.98	13.84	13.49	13.39	13.166	12.923	6H	13.188	13.378	13.513	13.653	14	14.248	13.25
+14	M14x0.5	M14x0.5	0.5	6g	13.98	13.87	13.66	13.57	13.439	13.257	6H	13.459	13.599	13.675	13.795	14	14.192	13.5
+15	M15x1.5	M15x1.5	1.5	6g	14.97	14.73	13.99	13.85	13.344	12.93	6H	13.376	13.676	14.026	14.216	15	15.407	13.5
+15	M15x1	M15x1	1	6g	14.97	14.79	14.32	14.21	13.891	13.59	6H	13.917	14.153	14.35	14.51	15	15.304	14
+16	M16x2	M16	2	6g	15.96	15.68	14.66	14.5	13.797	13.271	6H	13.835	14.21	14.701	14.913	16	16.501	14
+16	M16x1.6	M16x1.6	1.6	6g	15.97	15.76	14.93	14.82	14.236	13.838	6H	14.268	14.568	14.961	15.101	16	16.371	14.4
+16	M16x1.5	M16x1.5	1.5	6g	15.97	15.73	14.99	14.85	14.344	13.93	6H	14.376	14.676	15.026	15.216	16	16.406	14.5
+16	M16x1.25	M16x1.25	1.25	6g	15.97	15.76	15.16	15.03	14.619	14.258	6H	14.647	14.912	15.188	15.358	16	16.35	14.75
+16	M16x1	M16x1	1	6g	15.97	15.79	15.32	15.21	14.891	14.59	6H	14.917	15.153	15.35	15.51	16	16.304	15
+16	M16x0.75	M16x0.75	0.75	6g	15.98	15.84	15.49	15.39	15.166	14.923	6H	15.188	15.378	15.513	15.653	16	16.248	15.25
+16	M16x0.5	M16x0.5	0.5	6g	15.98	15.87	15.66	15.57	15.439	15.257	6H	15.459	15.599	15.675	15.795	16	16.192	15.5
+17	M17x1.5	M17x1.5	1.5	6g	16.97	16.73	15.99	15.85	15.344	14.93	6H	15.376	15.676	16.026	16.216	17	17.407	15.5
+17	M17x1	M17x1	1	6g	16.97	16.79	16.32	16.21	15.891	15.59	6H	15.917	16.153	16.35	16.51	17	17.304	16
+18	M18x2.5	M18	2.5	6g	17.96	17.62	16.33	16.16	15.252	14.624	6H	15.294	15.744	16.376	16.601	18	18.585	15.5
+18	M18x2	M18x2	2	6g	17.96	17.68	16.66	16.5	15.797	15.271	6H	15.835	16.21	16.701	16.913	18	18.501	16
+18	M18x1.5	M18x1.5	1.5	6g	17.97	17.73	16.99	16.85	16.344	15.93	6H	16.376	16.676	17.026	17.216	18	18.406	16.5
+18	M18x1.25	M18x1.25	1.25	6g	17.97	17.76	17.16	17.03	16.619	16.258	6H	16.647	16.912	17.188	17.358	18	18.35	16.75
+18	M18x1	M18x1	1	6g	17.97	17.79	17.32	17.21	16.891	16.59	6H	16.917	17.153	17.35	17.51	18	18.304	17
+18	M18x0.75	M18x0.75	0.75	6g	17.98	17.84	17.49	17.39	17.166	16.923	6H	17.188	17.378	17.513	17.653	18	18.248	17.25
+18	M18x0.5	M18x0.5	0.5	6g	17.98	17.87	17.66	17.57	17.439	17.257	6H	17.459	17.599	17.675	17.795	18	18.192	17.5
+20	M20x2.5	M20	2.5	6g	19.96	19.62	18.33	18.16	17.252	16.624	6H	17.294	17.744	18.376	18.6	20	20.585	17.5
+20	M20x2	M20x2	2	6g	19.96	19.68	18.66	18.5	17.797	17.271	6H	17.835	18.21	18.701	18.913	20	20.501	18
+20	M20x1.5	M20x1.5	1.5	6g	19.97	19.73	18.99	18.85	18.344	17.93	6H	18.376	18.676	19.026	19.216	20	20.406	18.5
+20	M20x1	M20x1	1	6g	19.97	19.79	19.32	19.21	18.891	18.59	6H	18.917	19.153	19.35	19.51	20	20.304	19
+20	M20x0.75	M20x0.75	0.75	6g	19.98	19.84	19.49	19.39	19.166	18.923	6H	19.188	19.378	19.513	19.653	20	20.248	19.25
+20	M20x0.5	M20x0.5	0.5	6g	19.98	19.87	19.66	19.57	19.439	19.257	6H	19.459	19.599	19.675	19.795	20	20.192	19.5
+22	M22x3	M22x3	3	6g	21.95	21.58	20	19.82	18.704	17.97	6H	18.752	19.252	20.051	20.296	22	22.677	19
+22	M22x2.5	M22	2.5	6g	21.96	21.62	20.33	20.16	19.252	18.624	6H	19.294	19.744	20.376	20.6	22	22.585	19.5
+22	M22x2	M22x2	2	6g	21.96	21.68	20.66	20.5	19.797	19.271	6H	19.835	20.21	20.701	20.913	22	22.501	20
+22	M22x1.5	M22x1.5	1.5	6g	21.97	21.73	20.99	20.85	20.344	19.93	6H	20.376	20.676	21.026	21.216	22	22.406	20.5
+22	M22x1	M22x1	1	6g	21.97	21.79	21.32	21.21	20.891	20.59	6H	20.917	21.153	21.35	21.51	22	22.304	21
+22	M22x0.75	M22x0.75	0.75	6g	21.98	21.84	21.49	21.39	21.166	20.923	6H	21.188	21.378	21.513	21.653	22	22.248	21.25
+22	M22x0.5	M22x0.5	0.5	6g	21.98	21.87	21.66	21.57	21.439	21.257	6H	21.459	21.599	21.675	21.795	22	22.192	21.5
+24	M24x3	M24	3	6g	23.95	23.58	22	21.8	20.704	19.955	6H	20.752	21.252	22.051	22.316	24	24.698	21
+24	M24x2.5	M24x2.5	2.5	6g	23.96	23.62	22.33	22.14	21.252	20.604	6H	21.294	21.744	22.376	22.626	24	24.611	21.5
+24	M24x2	M24x2	2	6g	23.96	23.68	22.66	22.49	21.797	21.261	6H	21.835	22.21	22.701	22.925	24	24.513	22
+24	M24x1.5	M24x1.5	1.5	6g	23.97	23.73	22.99	22.84	22.344	21.92	6H	22.376	22.676	23.026	23.226	24	24.417	22.5
+24	M24x1	M24x1	1	6g	23.97	23.79	23.32	23.2	22.891	22.583	6H	22.917	23.153	23.35	23.52	24	24.314	23
+24	M24x0.75	M24x0.75	0.75	6g	23.98	23.84	23.49	23.38	23.166	22.917	6H	23.188	23.378	23.513	23.663	24	24.258	23.25
+25	M25x2	M25x2	2	6g	24.96	24.68	23.66	23.49	22.797	22.261	6H	22.835	23.21	23.701	23.925	25	25.513	23
+25	M25x1.5	M25x1.5	1.5	6g	24.97	24.73	23.99	23.84	23.344	22.92	6H	23.376	23.676	24.026	24.226	25	25.416	23.5
+25	M25x1	M25x1	1	6g	24.97	24.79	24.32	24.2	23.891	23.583	6H	23.917	24.153	24.35	24.52	25	25.314	24
+26	M26x1.5	M26x1.5	1.5	6g	25.97	25.73	24.99	24.84	24.344	23.92	6H	24.376	24.676	25.026	25.226	26	26.417	24.5
+27	M27x3	M27	3	6g	26.95	26.58	25	24.8	23.704	22.955	6H	23.752	24.252	25.051	25.316	27	27.698	24
+27	M27x2	M27x2	2	6g	26.96	26.68	25.66	25.49	24.797	24.261	6H	24.835	25.21	25.701	25.925	27	27.513	25
+27	M27x1.5	M27x1.5	1.5	6g	26.97	26.73	25.99	25.84	25.344	24.92	6H	25.376	25.676	26.026	26.226	27	27.417	25.5
+27	M27x1	M27x1	1	6g	26.97	26.79	26.32	26.2	25.891	25.583	6H	25.917	26.153	26.35	26.52	27	27.314	26
+27	M27x0.75	M27x0.75	0.75	6g	26.98	26.84	26.49	26.38	26.166	25.917	6H	26.188	26.378	26.513	26.663	27	27.258	26.25
+28	M28x2	M28x2	2	6g	27.96	27.68	26.66	26.49	25.797	25.261	6H	25.835	26.21	26.701	26.925	28	28.513	26
+28	M28x1.5	M28x1.5	1.5	6g	27.97	27.73	26.99	26.84	26.344	25.92	6H	26.376	26.676	27.026	27.226	28	28.417	26.5
+28	M28x1	M28x1	1	6g	27.97	27.79	27.32	27.2	26.891	26.583	6H	26.917	27.153	27.35	27.52	28	28.314	27
+30	M30x3.5	M30	3.5	6g	29.95	29.52	27.67	27.46	26.158	25.306	6H	26.211	26.771	27.727	28.007	30	30.785	26.5
+30	M30x3	M30x3	3	6g	29.95	29.58	28	27.8	26.704	25.955	6H	26.752	27.252	28.051	28.316	30	30.698	27
+30	M30x2.5	M30x2.5	2.5	6g	29.96	29.62	28.33	28.14	27.252	26.604	6H	27.294	27.744	28.376	28.626	30	30.611	27.5
+30	M30x2	M30x2	2	6g	29.96	29.68	28.66	28.49	27.797	27.261	6H	27.835	28.21	28.701	28.925	30	30.513	28
+30	M30x1.5	M30x1.5	1.5	6g	29.97	29.73	28.99	28.84	28.344	27.92	6H	28.376	28.676	29.026	29.226	30	30.416	28.5
+30	M30x1	M30x1	1	6g	29.97	29.79	29.32	29.2	28.891	28.583	6H	28.917	29.153	29.35	29.52	30	30.314	29
+30	M30x0.75	M30x0.75	0.75	6g	29.98	29.84	29.49	29.38	29.166	28.917	6H	29.188	29.378	29.513	29.663	30	30.258	29.25
+32	M32x2	M32x2	2	6g	31.96	31.68	30.66	30.49	29.797	29.261	6H	29.835	30.21	30.701	30.925	32	32.513	30
+32	M32x1.5	M32x1.5	1.5	6g	31.97	31.73	30.99	30.84	30.344	29.92	6H	30.376	30.676	31.026	31.226	32	32.417	30.5
+33	M33x3.5	M33	3.5	6g	32.97	32.54	30.7	30.48	29.179	28.327	6H	29.211	29.771	30.727	31.007	33	33.785	29.5
+33	M33x3	M33x3	3	6g	32.95	32.58	31	30.8	29.704	28.955	6H	29.752	30.252	31.051	31.316	33	33.698	30
+33	M33x2	M33x2	2	6g	32.96	32.68	31.66	31.49	30.797	30.261	6H	30.835	31.21	31.701	31.925	33	33.513	31
+33	M33x1.5	M33x1.5	1.5	6g	32.97	32.73	31.99	31.84	31.344	30.92	6H	31.376	31.676	32.026	32.226	33	33.417	31.5
+33	M33x1	M33x1	1	6g	32.97	32.79	32.32	32.2	31.891	31.583	6H	31.917	32.153	32.35	32.52	33	33.314	32
+33	M33x0.75	M33x0.75	0.75	6g	32.98	32.84	32.49	32.38	32.166	31.917	6H	32.188	32.378	32.513	32.663	33	33.258	32.25
+35	M35x1.5	M35x1.5	1.5	6g	34.97	34.73	33.99	33.84	33.344	32.92	6H	33.376	33.676	34.026	34.226	35	35.416	33.5
+36	M36x4	M36	4	6g	35.94	35.47	33.34	33.12	31.61	30.654	6H	31.67	32.27	33.402	33.702	36	36.877	32
+36	M36x3	M36x3	3	6g	35.95	35.58	34	33.8	32.704	31.955	6H	32.752	33.252	34.051	34.316	36	36.698	33
+36	M36x2	M36x2	2	6g	35.96	35.68	34.66	34.49	33.797	33.261	6H	33.835	34.21	34.701	34.925	36	36.513	34
+36	M36x1.5	M36x1.5	1.5	6g	35.97	35.73	34.99	34.84	34.344	33.92	6H	34.376	34.676	35.026	35.226	36	36.417	34.5
+36	M36x1	M36x1	1	6g	35.97	35.79	35.32	35.2	34.891	34.583	6H	34.917	35.153	35.35	35.52	36	36.314	35
+38	M38x1.5	M38x1.5	1.5	6g	37.97	37.73	36.99	36.84	36.344	35.92	6H	36.376	36.676	37.026	37.226	38	38.417	36.5
+39	M39x4	M39	4	6g	38.94	38.47	36.34	36.12	34.61	33.654	6H	34.67	35.27	36.402	36.702	39	39.877	35
+39	M39x3	M39x3	3	6g	38.95	38.58	37	36.8	35.704	34.955	6H	35.752	36.252	37.051	37.316	39	39.698	36
+39	M39x2	M39x2	2	6g	38.96	38.68	37.66	37.49	36.797	36.261	6H	36.835	37.21	37.701	37.925	39	39.513	37
+39	M39x1.5	M39x1.5	1.5	6g	38.97	38.73	37.99	37.84	37.344	36.92	6H	37.376	37.676	38.026	38.226	39	39.417	37.5
+39	M39x1	M39x1	1	6g	38.97	38.79	38.32	38.2	37.891	37.583	6H	37.917	38.153	38.35	38.52	39	39.314	38
+40	M40x3	M40x3	3	6g	39.95	39.58	38	37.8	36.704	35.955	6H	36.752	37.252	38.051	38.316	40	40.698	37
+40	M40x2.5	M40x2.5	2.5	6g	39.96	39.62	38.33	38.14	37.252	36.604	6H	37.294	37.744	38.376	38.626	40	40.611	37.5
+40	M40x2	M40x2	2	6g	39.96	39.68	38.66	38.49	37.797	37.261	6H	37.835	38.21	38.701	38.925	40	40.513	38
+40	M40x1.5	M40x1.5	1.5	6g	39.97	39.73	38.99	38.84	38.344	37.92	6H	38.376	38.676	39.026	39.226	40	40.416	38.5
+42	M42x4.5	M42	4.5	6g	41.94	41.44	39.01	38.78	37.066	36.006	6H	37.129	37.799	39.077	39.392	42	42.965	37.5
+42	M42x4	M42x4	4	6g	41.94	41.47	39.34	39.12	37.61	36.654	6H	37.67	38.27	39.402	39.702	42	42.877	38
+42	M42x3	M42x3	3	6g	41.95	41.58	40	39.8	38.704	37.955	6H	38.752	39.252	40.051	40.316	42	42.698	39
+42	M42x2	M42x2	2	6g	41.96	41.68	40.66	40.49	39.797	39.261	6H	39.835	40.21	40.701	40.925	42	42.513	40
+42	M42x1.5	M42x1.5	1.5	6g	41.97	41.73	40.99	40.84	40.344	39.92	6H	40.376	40.676	41.026	41.226	42	42.417	40.5
+42	M42x1	M42x1	1	6g	41.97	41.79	41.32	41.2	40.891	40.583	6H	40.917	41.153	41.35	41.52	42	42.314	41
+45	M45x4.5	M45	4.5	6g	44.94	44.44	42.01	41.78	40.066	39.006	6H	40.129	40.799	42.077	42.392	45	45.965	40.5
+45	M45x4	M45x4	4	6g	44.94	44.47	42.34	42.12	40.61	39.654	6H	40.67	41.27	42.402	42.702	45	45.877	41
+45	M45x3	M45x3	3	6g	44.95	44.58	43	42.8	41.704	40.955	6H	41.752	42.252	43.051	43.316	45	45.698	42
+45	M45x2	M45x2	2	6g	44.96	44.68	43.66	43.49	42.797	42.261	6H	42.835	43.21	43.701	43.925	45	45.513	43
+45	M45x1.5	M45x1.5	1.5	6g	44.97	44.73	43.99	43.84	43.344	42.92	6H	43.376	43.676	44.026	44.226	45	45.416	43.5
+45	M45x1	M45x1	1	6g	44.97	44.79	44.32	44.2	43.891	43.583	6H	43.917	44.153	44.35	44.52	45	45.314	44
+48	M48x5	M48	5	6g	47.93	47.4	44.68	44.43	42.516	41.351	6H	42.587	43.297	44.752	45.087	48	49.057	43
+48	M48x4	M48x4	4	6g	47.94	47.47	45.34	45.11	43.61	42.642	6H	43.67	44.27	45.402	45.717	48	48.892	44
+48	M48x3	M48x3	3	6g	47.95	47.58	46	45.79	44.704	43.943	6H	44.752	45.252	46.051	46.331	48	48.713	45
+48	M48x2	M48x2	2	6g	47.96	47.68	46.66	46.48	45.797	45.251	6H	45.835	46.21	46.701	46.937	48	48.525	46
+48	M48x1.5	M48x1.5	1.5	6g	47.97	47.73	46.99	46.83	46.344	45.91	6H	46.376	46.676	47.026	47.238	48	48.429	46.5
+50	M50x4	M50x4	4	6g	49.94	49.47	47.34	47.11	45.61	44.642	6H	45.67	46.27	47.402	47.717	50	50.892	46
+50	M50x3	M50x3	3	6g	49.95	49.58	48	47.79	46.704	45.943	6H	46.752	47.252	48.051	48.331	50	50.713	47
+50	M50x2	M50x2	2	6g	49.96	49.68	48.66	48.48	47.797	47.251	6H	47.835	48.21	48.701	48.937	50	50.525	48
+50	M50x1.5	M50x1.5	1.5	6g	49.97	49.73	48.99	48.83	48.344	47.91	6H	48.376	48.676	49.026	49.238	50	50.428	48.5
+52	M52x5	M52	5	6g	51.93	51.4	48.68	48.45	46.516	45.365	6H	46.587	47.297	48.752	49.067	52	53.037	47
+52	M52x4	M52x4	4	6g	51.94	51.47	49.34	49.11	47.61	46.642	6H	47.67	48.27	49.402	49.717	52	52.892	48
+52	M52x3	M52x3	3	6g	51.95	51.58	50	49.79	48.704	47.943	6H	48.752	49.252	50.051	50.331	52	52.713	49
+52	M52x2	M52x2	2	6g	51.96	51.68	50.66	50.48	49.797	49.251	6H	49.835	50.21	50.701	50.937	52	52.525	50
+52	M52x1.5	M52x1.5	1.5	6g	51.97	51.73	50.99	50.83	50.344	49.91	6H	50.376	50.676	51.026	51.238	52	52.429	50.5
+55	M55x4	M55x4	4	6g	54.94	54.47	52.34	52.11	50.61	49.642	6H	50.67	51.27	52.402	52.717	55	55.892	51
+55	M55x3	M55x3	3	6g	54.95	54.58	53	52.79	51.704	50.943	6H	51.752	52.252	53.051	53.331	55	55.713	52
+55	M55x2	M55x2	2	6g	54.96	54.68	53.66	53.48	52.797	52.251	6H	52.835	53.21	53.701	53.937	55	55.525	53
+55	M55x1.5	M55x1.5	1.5	6g	54.97	54.73	53.99	53.83	53.344	52.91	6H	53.376	53.676	54.026	54.238	55	55.428	53.5
+56	M56x5.5	M56	5.5	6g	55.93	55.37	52.35	52.09	49.971	48.7	6H	50.046	50.796	52.428	52.783	56	57.149	50.5
+56	M56x4	M56x4	4	6g	55.94	55.47	53.34	53.11	51.61	50.642	6H	51.67	52.27	53.402	53.717	56	56.892	52
+56	M56x3	M56x3	3	6g	55.95	55.58	54	53.79	52.704	51.943	6H	52.752	53.252	54.051	54.331	56	56.713	53
+56	M56x2	M56x2	2	6g	55.96	55.68	54.66	54.48	53.797	53.251	6H	53.835	54.21	54.701	54.937	56	56.525	54
+56	M56x1.5	M56x1.5	1.5	6g	55.97	55.73	54.99	54.83	54.344	53.91	6H	54.376	54.676	55.026	55.238	56	56.429	54.5
+56	M56x1	M56x1	1	6g	55.97	55.79	55.32	55.18	54.891	54.568	6H	54.917	55.153	55.35	55.54	56	56.334	55
+58	M58x4	M58x4	4	6g	57.94	57.47	55.34	55.11	53.61	52.642	6H	53.67	54.27	55.402	55.717	58	58.892	54
+58	M58x3	M58x3	3	6g	57.95	57.58	56	55.79	54.704	53.943	6H	54.752	55.252	56.051	56.331	58	58.713	55
+58	M58x2	M58x2	2	6g	57.96	57.68	56.66	56.48	55.797	55.251	6H	55.835	56.21	56.701	56.937	58	58.525	56
+58	M58x1.5	M58x1.5	1.5	6g	57.97	57.73	56.99	56.83	56.344	55.91	6H	56.376	56.676	57.026	57.238	58	58.429	56.5
+60	M60x5.5	M60	5.5	6g	59.93	59.37	56.35	56.09	53.971	52.7	6H	54.046	54.796	56.428	56.783	60	61.149	54.5
+60	M60x4	M60x4	4	6g	59.94	59.47	57.34	57.11	55.61	54.642	6H	55.67	56.27	57.402	57.717	60	60.892	56
+60	M60x3	M60x3	3	6g	59.95	59.58	58	57.79	56.704	55.943	6H	56.752	57.252	58.051	58.331	60	60.713	57
+60	M60x2	M60x2	2	6g	59.96	59.68	58.66	58.48	57.797	57.251	6H	57.835	58.21	58.701	58.937	60	60.525	58
+60	M60x1.5	M60x1.5	1.5	6g	59.97	59.73	58.99	58.83	58.344	57.91	6H	58.376	58.676	59.026	59.238	60	60.428	58.5
+60	M60x1	M60x1	1	6g	59.97	59.79	59.32	59.18	58.891	58.568	6H	58.917	59.153	59.35	59.54	60	60.334	59
+62	M62x4	M62x4	4	6g	61.94	61.47	59.34	59.11	57.61	56.642	6H	57.67	58.27	59.402	59.717	62	62.892	58
+62	M62x3	M62x3	3	6g	61.95	61.58	60	59.79	58.704	57.943	6H	58.752	59.252	60.051	60.331	62	62.713	59
+62	M62x2	M62x2	2	6g	61.96	61.68	60.66	60.48	59.797	59.251	6H	59.835	60.21	60.701	60.937	62	62.525	60
+62	M62x1.5	M62x1.5	1.5	6g	61.97	61.73	60.99	60.83	60.344	59.91	6H	60.376	60.676	61.026	61.238	62	62.429	60.5
+63	M63x1.5	M63x1.5	1.5	6g	62.97	62.73	61.99	61.83	61.344	60.91	6H	61.376	61.676	62.026	62.238	63	63.429	61.5
+64	M64x6	M64	6	6g	63.92	63.32	60.02	59.74	57.425	56.047	6H	57.505	58.305	60.103	60.478	64	65.241	58
+64	M64x5.5	M64x5.5	5.5	6g	63.93	63.37	60.35	60.09	57.971	56.7	6H	58.046	58.796	60.428	60.783	64	65.149	58.5
+64	M64x4	M64x4	4	6g	63.94	63.47	61.34	61.11	59.61	58.642	6H	59.67	60.27	61.402	61.717	64	64.892	60
+64	M64x3	M64x3	3	6g	63.95	63.58	62	61.79	60.704	59.943	6H	60.752	61.252	62.051	62.331	64	64.713	61
+64	M64x2	M64x2	2	6g	63.96	63.68	62.66	62.48	61.797	61.251	6H	61.835	62.21	62.701	62.937	64	64.525	62
+64	M64x1.5	M64x1.5	1.5	6g	63.97	63.73	62.99	62.83	62.344	61.91	6H	62.376	62.676	63.026	63.238	64	64.429	62.5
+64	M64x1	M64x1	1	6g	63.97	63.79	63.32	63.18	62.891	62.568	6H	62.917	63.153	63.35	63.54	64	64.334	63
+65	M65x4	M65x4	4	6g	64.94	64.47	62.34	62.11	60.61	59.642	6H	60.67	61.27	62.402	62.717	65	65.892	61
+65	M65x3	M65x3	3	6g	64.95	64.58	63	62.79	61.704	60.943	6H	61.752	62.252	63.051	63.331	65	65.713	62
+65	M65x2	M65x2	2	6g	64.96	64.68	63.66	63.48	62.797	62.251	6H	62.835	63.21	63.701	63.937	65	65.525	63
+65	M65x1.5	M65x1.5	1.5	6g	64.97	64.73	63.99	63.83	63.344	62.91	6H	63.376	63.676	64.026	64.238	65	65.428	63.5
+68	M68x6	M68x6	6	6g	67.92	67.32	64.02	63.74	61.425	60.047	6H	61.505	62.305	64.103	64.478	68	69.241	62
+68	M68x4	M68x4	4	6g	67.94	67.47	65.34	65.11	63.61	62.642	6H	63.67	64.27	65.402	65.717	68	68.892	64
+68	M68x3	M68x3	3	6g	67.95	67.58	66	65.79	64.704	63.943	6H	64.752	65.252	66.051	66.331	68	68.713	65
+68	M68x2	M68x2	2	6g	67.96	67.68	66.66	66.48	65.797	65.251	6H	65.835	66.21	66.701	66.937	68	68.525	66
+68	M68x1.5	M68x1.5	1.5	6g	67.97	67.73	66.99	66.83	66.344	65.91	6H	66.376	66.676	67.026	67.238	68	68.429	66.5
+68	M68x1	M68x1	1	6g	67.97	67.79	67.32	67.18	66.891	66.568	6H	66.917	67.153	67.35	67.54	68	68.334	67
+70	M70x6	M70x6	6	6g	69.92	69.32	66.02	65.74	63.425	62.047	6H	63.505	64.305	66.103	66.478	70	71.241	64
+70	M70x4	M70x4	4	6g	69.94	69.47	67.34	67.11	65.61	64.642	6H	65.67	66.27	67.402	67.717	70	70.892	66
+70	M70x3	M70x3	3	6g	69.95	69.58	68	67.79	66.704	65.943	6H	66.752	67.252	68.051	68.331	70	70.713	67
+70	M70x2	M70x2	2	6g	69.96	69.68	68.66	68.48	67.797	67.251	6H	67.835	68.21	68.701	68.937	70	70.525	68
+70	M70x1.5	M70x1.5	1.5	6g	69.97	69.73	68.99	68.83	68.344	67.91	6H	68.376	68.676	69.026	69.238	70	70.428	68.5
+72	M72x6	M72x6	6	6g	71.92	71.32	68.02	67.74	65.425	64.047	6H	65.505	66.305	68.103	68.478	72	73.241	66
+72	M72x4	M72x4	4	6g	71.94	71.47	69.34	69.11	67.61	66.642	6H	67.67	68.27	69.402	69.717	72	72.892	68
+72	M72x3	M72x3	3	6g	71.95	71.58	70	69.79	68.704	67.943	6H	68.752	69.252	70.051	70.331	72	72.713	69
+72	M72x2	M72x2	2	6g	71.96	71.68	70.66	70.48	69.797	69.251	6H	69.835	70.21	70.701	70.937	72	72.525	70
+72	M72x1.5	M72x1.5	1.5	6g	71.97	71.73	70.99	70.83	70.344	69.91	6H	70.376	70.676	71.026	71.238	72	72.429	70.5
+72	M72x1	M72x1	1	6g	71.97	71.79	71.32	71.18	70.891	70.568	6H	70.917	71.153	71.35	71.54	72	72.334	71
+75	M75x6	M75x6	6	6g	74.92	74.32	71.02	70.74	68.425	67.047	6H	68.505	69.305	71.103	71.478	75	76.241	69
+75	M75x4	M75x4	4	6g	74.94	74.47	72.34	72.11	70.61	69.642	6H	70.67	71.27	72.402	72.717	75	75.892	71
+75	M75x3	M75x3	3	6g	74.95	74.58	73	72.79	71.704	70.943	6H	71.752	72.252	73.051	73.331	75	75.713	72
+75	M75x2	M75x2	2	6g	74.96	74.68	73.66	73.48	72.797	72.251	6H	72.835	73.21	73.701	73.937	75	75.525	73
+75	M75x1.5	M75x1.5	1.5	6g	74.97	74.73	73.99	73.83	73.344	72.91	6H	73.376	73.676	74.026	74.238	75	75.428	73.5
+76	M76x6	M76x6	6	6g	75.92	75.32	72.02	71.74	69.425	68.047	6H	69.505	70.305	72.103	72.478	76	77.241	70
+76	M76x4	M76x4	4	6g	75.94	75.47	73.34	73.11	71.61	70.642	6H	71.67	72.27	73.402	73.717	76	76.892	72
+76	M76x3	M76x3	3	6g	75.95	75.58	74	73.79	72.704	71.943	6H	72.752	73.252	74.051	74.331	76	76.713	73
+76	M76x2	M76x2	2	6g	75.96	75.68	74.66	74.48	73.797	73.251	6H	73.835	74.21	74.701	74.937	76	76.525	74
+76	M76x1.5	M76x1.5	1.5	6g	75.97	75.73	74.99	74.83	74.344	73.91	6H	74.376	74.676	75.026	75.238	76	76.429	74.5
+76	M76x1	M76x1	1	6g	75.97	75.79	75.32	75.18	74.891	74.568	6H	74.917	75.153	75.35	75.54	76	76.334	75
+78	M78x2	M78x2	2	6g	77.96	77.68	76.66	76.48	75.797	75.251	6H	75.835	76.21	76.701	76.937	78	78.525	76
+80	M80x6	M80x6	6	6g	79.92	79.32	76.02	75.74	73.425	72.047	6H	73.505	74.305	76.103	76.478	80	81.241	74
+80	M80x4	M80x4	4	6g	79.94	79.34	77.34	77.11	75.61	74.642	6H	75.67	76.27	77.402	77.717	80	80.892	76
+80	M80x3	M80x3	3	6g	79.95	79.58	78	77.79	76.704	75.943	6H	76.752	77.252	78.051	78.331	80	80.713	77
+80	M80x2	M80x2	2	6g	79.96	79.68	78.66	78.48	77.797	77.251	6H	77.835	78.21	78.701	78.937	80	80.525	78
+80	M80x1.5	M80x1.5	1.5	6g	79.97	79.73	78.99	78.83	78.344	77.91	6H	78.376	78.676	79.026	79.238	80	80.428	78.5
+80	M80x1	M80x1	1	6g	79.97	79.79	79.32	79.18	78.891	78.568	6H	78.917	79.153	79.35	79.54	80	80.334	79
+82	M82x2	M82x2	2	6g	81.96	81.68	80.66	80.48	79.797	79.251	6H	79.835	80.21	80.701	80.937	82	82.525	80
+85	M85x6	M85x6	6	6g	84.92	84.32	81.02	80.74	78.425	77.047	6H	78.505	79.305	81.103	81.478	85	86.241	79
+85	M85x4	M85x4	4	6g	84.94	84.47	82.34	82.11	80.61	79.642	6H	80.67	81.27	82.402	82.717	85	85.892	81
+85	M85x3	M85x3	3	6g	84.95	84.58	83	82.79	81.704	80.943	6H	81.752	82.252	83.051	83.331	85	85.713	82
+85	M85x2	M85x2	2	6g	84.96	84.68	83.66	83.48	82.797	82.251	6H	82.835	83.21	83.701	83.937	85	85.525	83
+85	M85x1.5	M85x1.5	1.5	6g	84.97	84.73	83.99	83.83	83.344	82.91	6H	83.376	83.676	84.026	84.238	85	85.429	83.5
+90	M90x6	M90x6	6	6g	89.92	89.32	86.02	85.74	83.425	82.047	6H	83.505	84.305	86.103	86.478	90	91.241	84
+90	M90x4	M90x4	4	6g	89.94	89.47	87.34	87.11	85.61	84.642	6H	85.67	86.27	87.402	87.717	90	90.892	86
+90	M90x3	M90x3	3	6g	89.95	89.58	88	87.79	86.704	85.943	6H	86.752	87.252	88.051	88.331	90	90.713	87
+90	M90x2	M90x2	2	6g	89.96	89.68	88.66	88.48	87.797	87.251	6H	87.835	88.21	88.701	88.937	90	90.525	88
+90	M90x1.5	M90x1.5	1.5	6g	89.97	89.73	88.99	88.83	88.344	87.91	6H	88.376	88.676	89.026	89.238	90	90.429	88.5
+95	M95x6	M95x6	6	6g	94.92	94.32	91.02	90.72	88.425	87.027	6H	88.505	89.305	91.103	91.503	95	96.266	89
+95	M95x4	M95x4	4	6g	94.94	94.47	92.34	92.09	90.61	89.628	6H	90.67	91.27	92.402	92.737	95	95.912	91
+95	M95x3	M95x3	3	6g	94.95	94.58	93	92.78	91.704	90.931	6H	91.752	92.252	93.051	93.351	95	95.733	92
+95	M95x2	M95x2	2	6g	94.96	94.68	93.66	93.47	92.797	92.241	6H	92.835	93.21	93.701	93.951	95	95.539	93
+95	M95x1.5	M95x1.5	1.5	6g	94.97	94.73	93.99	93.81	93.344	92.89	6H	93.376	93.676	94.026	94.262	95	95.453	93.5
+100	M100x6	M100x6	6	6g	99.92	99.32	96.02	95.72	93.425	92.027	6H	93.505	94.305	96.103	96.503	100	101.27	94
+100	M100x4	M100x4	4	6g	99.94	99.47	97.34	97.09	95.61	94.628	6H	95.67	96.27	97.402	97.737	100	100.91	96
+100	M100x3	M100x3	3	6g	99.95	99.58	98	97.78	96.704	95.931	6H	96.752	97.252	98.051	98.351	100	100.73	97
+100	M100x2	M100x2	2	6g	99.96	99.68	98.66	98.47	97.797	97.241	6H	97.835	98.21	98.701	98.951	100	100.54	98
+100	M100x1.5	M100x1.5	1.5	6g	99.97	99.73	98.99	98.81	98.344	97.89	6H	98.376	98.676	99.026	99.262	100	100.45	98.5
+105	M105x6	M105x6	6	6g	104.9	104.3	101	100.7	98.425	97.027	6H	98.505	99.305	101.1	101.5	105	106.27	99
+105	M105x4	M105x4	4	6g	104.9	104.5	102.3	102.1	100.61	99.628	6H	100.67	101.27	102.4	102.74	105	105.91	101
+105	M105x3	M105x3	3	6g	105	104.6	103	102.8	101.7	100.93	6H	101.75	102.25	103.05	103.35	105	105.73	102
+105	M105x2	M105x2	2	6g	105	104.7	103.7	103.5	102.8	102.24	6H	102.84	103.21	103.7	103.95	105	105.54	103
+105	M105x1.5	M105x1.5	1.5	6g	105	104.7	104	103.8	103.34	102.89	6H	103.38	103.68	104.03	104.26	105	105.45	103.5
+110	M110x6	M110x6	6	6g	109.9	109.3	106	105.7	103.43	102.03	6H	103.51	104.31	106.1	106.5	110	111.27	104
+110	M110x4	M110x4	4	6g	109.9	109.5	107.3	107.1	105.61	104.63	6H	105.67	106.27	107.4	107.74	110	110.91	106
+110	M110x3	M110x3	3	6g	110	109.6	108	107.8	106.7	105.93	6H	106.75	107.25	108.05	108.35	110	110.73	107
+110	M110x2	M110x2	2	6g	110	109.7	108.7	108.5	107.8	107.24	6H	107.84	108.21	108.7	108.95	110	110.54	108
+110	M110x1.5	M110x1.5	1.5	6g	110	109.7	109	108.8	108.34	107.89	6H	108.38	108.68	109.03	109.26	110	110.45	108.5
+115	M115x6	M115x6	6	6g	114.9	114.3	111	110.7	108.43	107.03	6H	108.51	109.31	111.1	111.5	115	116.27	109
+115	M115x4	M115x4	4	6g	114.9	114.5	112.3	112.1	110.61	109.63	6H	110.67	111.27	112.4	112.74	115	115.91	111
+115	M115x3	M115x3	3	6g	115	114.6	113	112.8	111.7	110.93	6H	111.75	112.25	113.05	113.35	115	115.73	112
+115	M115x2	M115x2	2	6g	115	114.7	113.7	113.5	112.8	112.24	6H	112.84	113.21	113.7	113.95	115	115.54	113
+115	M115x1.5	M115x1.5	1.5	6g	115	114.7	114	113.8	113.34	112.89	6H	113.38	113.68	114.03	114.26	115	115.45	113.5
+120	M120x6	M120x6	6	6g	119.9	119.3	116	115.7	113.43	112.03	6H	113.51	114.31	116.1	116.5	120	121.27	114
+120	M120x4	M120x4	4	6g	119.9	119.5	117.3	117.1	115.61	114.63	6H	115.67	116.27	117.4	117.74	120	120.91	116
+120	M120x3	M120x3	3	6g	120	119.6	118	117.8	116.7	115.93	6H	116.75	117.25	118.05	118.35	120	120.73	117
+120	M120x2	M120x2	2	6g	120	119.7	118.7	118.5	117.8	117.24	6H	117.84	118.21	118.7	118.95	120	120.54	118
+120	M120x1.5	M120x1.5	1.5	6g	120	119.7	119	118.8	118.34	117.89	6H	118.38	118.68	119.03	119.26	120	120.45	118.5
+125	M125x8	M125x8	8	6g	124.9	124.2	119.7	119.4	116.24	114.44	6H	116.34	117.34	119.8	120.25	125	126.61	117
+125	M125x6	M125x6	6	6g	124.9	124.3	121	120.7	118.43	117.03	6H	118.51	119.31	121.1	121.5	125	126.27	119
+125	M125x4	M125x4	4	6g	124.9	124.5	122.3	122.1	120.61	119.63	6H	120.67	121.27	122.4	122.74	125	125.91	121
+125	M125x3	M125x3	3	6g	125	124.6	123	122.8	121.7	120.93	6H	121.75	122.25	123.05	123.35	125	125.73	122
+125	M125x2	M125x2	2	6g	125	124.7	123.7	123.5	122.8	122.24	6H	122.84	123.21	123.7	123.95	125	125.54	123
+125	M125x1.5	M125x1.5	1.5	6g	125	124.7	124	123.8	123.34	122.89	6H	123.38	123.68	124.03	124.26	125	125.45	123.5
+130	M130x8	M130x8	8	6g	129.9	129.2	124.7	124.4	121.24	119.44	6H	121.34	122.34	124.8	125.25	130	131.61	122
+130	M130x6	M130x6	6	6g	129.9	129.3	126	125.7	123.43	122.03	6H	123.51	124.31	126.1	126.5	130	131.27	124
+130	M130x4	M130x4	4	6g	129.9	129.5	127.3	127.1	125.61	124.63	6H	125.67	126.27	127.4	127.74	130	130.91	126
+130	M130x3	M130x3	3	6g	130	129.6	128	127.8	126.7	125.93	6H	126.75	127.25	128.05	128.35	130	130.73	127
+130	M130x2	M130x2	2	6g	130	129.7	128.7	128.5	127.8	127.24	6H	127.84	128.21	128.7	128.95	130	130.54	128
+130	M130x1.5	M130x1.5	1.5	6g	130	129.7	129	128.8	128.34	127.89	6H	128.38	128.68	129.03	129.26	130	130.45	128.5
+135	M135x6	M135x6	6	6g	134.9	134.3	131	130.7	128.43	127.03	6H	128.51	129.31	131.1	131.5	135	136.27	129
+135	M135x4	M135x4	4	6g	134.9	134.5	132.3	132.1	130.61	129.63	6H	130.67	131.27	132.4	132.74	135	135.91	131
+135	M135x3	M135x3	3	6g	135	134.6	133	132.8	131.7	130.93	6H	131.75	132.25	133.05	133.35	135	135.73	132
+135	M135x2	M135x2	2	6g	135	134.7	133.7	133.5	132.8	132.24	6H	132.84	133.21	133.7	133.95	135	135.54	133
+135	M135x1.5	M135x1.5	1.5	6g	135	134.7	134	133.8	133.34	132.89	6H	133.38	133.68	134.03	134.26	135	135.45	133.5
+140	M140x8	M140x8	8	6g	139.9	139.2	134.7	134.4	131.24	129.44	6H	131.34	132.34	134.8	135.25	140	141.61	132
+140	M140x6	M140x6	6	6g	139.9	139.3	136	135.7	133.43	132.03	6H	133.51	134.31	136.1	136.5	140	141.27	134
+140	M140x4	M140x4	4	6g	139.9	139.5	137.3	137.1	135.61	134.63	6H	135.67	136.27	137.4	137.74	140	140.91	136
+140	M140x3	M140x3	3	6g	140	139.6	138	137.8	136.7	135.93	6H	136.75	137.25	138.05	138.35	140	140.73	137
+140	M140x2	M140x2	2	6g	140	139.7	138.7	138.5	137.8	137.24	6H	137.84	138.21	138.7	138.95	140	140.54	138
+140	M140x1.5	M140x1.5	1.5	6g	140	139.7	139	138.8	138.34	137.89	6H	138.38	138.68	139.03	139.26	140	140.45	138.5
+145	M145x6	M145x6	6	6g	144.9	144.3	141	140.7	138.43	137.03	6H	138.51	139.31	141.1	141.5	145	146.27	139
+145	M145x4	M145x4	4	6g	144.9	144.5	142.3	142.1	140.61	139.63	6H	140.67	141.27	142.4	142.74	145	145.91	141
+145	M145x3	M145x3	3	6g	145	144.6	143	142.8	141.7	140.93	6H	141.75	142.25	143.05	143.35	145	145.73	142
+145	M145x2	M145x2	2	6g	145	144.7	143.7	143.5	142.8	142.24	6H	142.84	143.21	143.7	143.95	145	145.54	143
+145	M145x1.5	M145x1.5	1.5	6g	145	144.7	144	143.8	143.34	142.89	6H	143.38	143.68	144.03	144.26	145	145.45	143.5
+150	M150x8	M150x8	8	6g	149.9	149.2	144.7	144.4	141.24	139.44	6H	141.34	142.34	144.8	145.25	150	151.61	142
+150	M150x6	M150x6	6	6g	149.9	149.3	146	145.7	143.43	142.03	6H	143.51	144.31	146.1	146.5	150	151.27	144
+150	M150x4	M150x4	4	6g	149.9	149.5	147.3	147.1	145.61	144.63	6H	145.67	146.27	147.4	147.74	150	150.91	146
+150	M150x3	M150x3	3	6g	150	149.6	148	147.8	146.7	145.93	6H	146.75	147.25	148.05	148.35	150	150.73	147
+150	M150x2	M150x2	2	6g	150	149.7	148.7	148.5	147.8	147.24	6H	147.84	148.21	148.7	148.95	150	150.54	148
+150	M150x1.5	M150x1.5	1.5	6g	150	149.7	149	148.8	148.34	147.89	6H	148.38	148.68	149.03	149.26	150	150.45	148.5
+155	M155x6	M155x6	6	6g	154.9	154.3	151	150.7	148.43	147.03	6H	148.51	149.31	151.1	151.5	155	156.27	149
+155	M155x4	M155x4	4	6g	154.9	154.5	152.3	152.1	150.61	149.63	6H	150.67	151.27	152.4	152.74	155	155.91	151
+155	M155x3	M155x3	3	6g	155	154.6	153	152.8	151.7	150.93	6H	151.75	152.25	153.05	153.35	155	155.73	152
+155	M155x2	M155x2	2	6g	155	154.7	153.7	153.5	152.8	152.24	6H	152.84	153.21	153.7	153.95	155	155.54	153
+160	M160x8	M160x8	8	6g	159.9	159.2	154.7	154.4	151.24	149.44	6H	151.34	152.34	154.8	155.25	160	161.61	152
+160	M160x6	M160x6	6	6g	159.9	159.3	156	155.7	153.43	152.03	6H	153.51	154.31	156.1	156.5	160	161.27	154
+160	M160x4	M160x4	4	6g	159.9	159.5	157.3	157.1	155.61	154.63	6H	155.67	156.27	157.4	157.74	160	160.91	156
+160	M160x3	M160x3	3	6g	160	159.6	158	157.8	156.7	155.93	6H	156.75	157.25	158.05	158.35	160	160.73	157
+160	M160x2	M160x2	2	6g	160	159.7	158.7	158.5	157.8	157.24	6H	157.84	158.21	158.7	158.95	160	160.54	158
+165	M165x6	M165x6	6	6g	164.9	164.3	161	160.7	158.43	157.03	6H	158.51	159.31	161.1	161.5	165	166.27	159
+165	M165x4	M165x4	4	6g	164.9	164.5	162.3	162.1	160.61	159.63	6H	160.67	161.27	162.4	162.74	165	165.91	161
+165	M165x3	M165x3	3	6g	165	164.6	163	162.8	161.7	160.93	6H	161.75	162.25	163.05	163.35	165	165.73	162
+165	M165x2	M165x2	2	6g	165	164.7	163.7	163.5	162.8	162.24	6H	162.84	163.21	163.7	163.95	165	165.54	163
+170	M170x8	M170x8	8	6g	169.9	169.2	164.7	164.4	161.24	159.44	6H	161.34	162.34	164.8	165.25	170	171.61	162
+170	M170x6	M170x6	6	6g	169.9	169.3	166	165.7	163.43	162.03	6H	163.51	164.31	166.1	166.5	170	171.27	164
+170	M170x4	M170x4	4	6g	169.9	169.5	167.3	167.1	165.61	164.63	6H	165.67	166.27	167.4	167.74	170	170.91	166
+170	M170x3	M170x3	3	6g	170	169.6	168	167.8	166.7	165.93	6H	166.75	167.25	168.05	168.35	170	170.73	167
+170	M170x2	M170x2	2	6g	170	169.7	168.7	168.5	167.8	167.24	6H	167.84	168.21	168.7	168.95	170	170.54	168
+175	M175x6	M175x6	6	6g	174.9	174.3	171	170.7	168.43	167.03	6H	168.51	169.31	171.1	171.5	175	176.27	169
+175	M175x4	M175x4	4	6g	174.9	174.5	172.3	172.1	170.61	169.63	6H	170.67	171.27	172.4	172.74	175	175.91	171
+175	M175x3	M175x3	3	6g	175	174.6	173	172.8	171.7	170.93	6H	171.75	172.25	173.05	173.35	175	175.73	172
+175	M175x2	M175x2	2	6g	175	174.7	173.7	173.5	172.8	172.24	6H	172.84	173.21	173.7	173.95	175	175.54	173
+180	M180x8	M180x8	8	6g	179.9	179.2	174.7	174.4	171.24	169.44	6H	171.34	172.34	174.8	175.25	180	181.61	172
+180	M180x6	M180x6	6	6g	179.9	179.3	176	175.7	173.43	172.03	6H	173.51	174.31	176.1	176.5	180	181.27	174
+180	M180x4	M180x4	4	6g	179.9	179.5	177.3	177.1	175.61	174.63	6H	175.67	176.27	177.4	177.74	180	180.91	176
+180	M180x3	M180x3	3	6g	180	179.6	178	177.8	176.7	175.93	6H	176.75	177.25	178.05	178.35	180	180.73	177
+180	M180x2	M180x2	2	6g	180	179.7	178.7	178.5	177.8	177.24	6H	177.84	178.21	178.7	178.95	180	180.54	178
+185	M185x6	M185x6	6	6g	184.9	184.3	181	180.7	178.43	177.01	6H	178.51	179.31	181.1	181.53	185	186.29	179
+185	M185x4	M185x4	4	6g	184.9	184.5	182.3	182.1	180.61	179.6	6H	180.67	181.27	182.4	182.78	185	185.95	181
+185	M185x3	M185x3	3	6g	185	184.6	183	182.8	181.7	180.91	6H	181.75	182.25	183.05	183.39	185	185.77	182
+185	M185x2	M185x2	2	6g	185	184.7	183.7	183.5	182.8	182.22	6H	182.84	183.21	183.7	183.98	185	185.57	183
+190	M190x8	M190x8	8	6g	189.9	189.2	184.7	184.3	181.24	179.42	6H	181.34	182.34	184.8	185.28	190	191.63	182
+190	M190x6	M190x6	6	6g	189.9	189.3	186	185.7	183.43	182.01	6H	183.51	184.31	186.1	186.53	190	191.29	184
+190	M190x4	M190x4	4	6g	189.9	189.5	187.3	187.1	185.61	184.6	6H	185.67	186.27	187.4	187.78	190	190.95	186
+190	M190x3	M190x3	3	6g	190	189.6	188	187.8	186.7	185.91	6H	186.75	187.25	188.05	188.39	190	190.77	187
+190	M190x2	M190x2	2	6g	190	189.7	188.7	188.5	187.8	187.22	6H	187.84	188.21	188.7	188.98	190	190.57	188
+195	M195x6	M195x6	6	6g	194.9	194.3	191	190.7	188.43	187.01	6H	188.51	189.31	191.1	191.53	195	196.29	189
+195	M195x4	M195x4	4	6g	194.9	194.5	192.3	192.1	190.61	189.6	6H	190.67	191.27	192.4	192.78	195	195.95	191
+195	M195x3	M195x3	3	6g	195	194.6	193	192.8	191.7	190.91	6H	191.75	192.25	193.05	193.39	195	195.77	192
+195	M195x2	M195x2	2	6g	195	194.7	193.7	193.5	192.8	192.22	6H	192.84	193.21	193.7	193.98	195	195.57	193
+200	M200x8	M200x8	8	6g	199.9	199.2	194.7	194.3	191.24	189.42	6H	191.34	192.34	194.8	195.28	200	201.63	192
+200	M200x6	M200x6	6	6g	199.9	199.3	196	195.7	193.43	192.01	6H	193.51	194.31	196.1	196.53	200	201.29	194
+200	M200x4	M200x4	4	6g	199.9	199.5	197.3	197.1	195.61	194.6	6H	195.67	196.27	197.4	197.78	200	200.95	196
+200	M200x3	M200x3	3	6g	200	199.6	198	197.8	196.7	195.91	6H	196.75	197.25	198.05	198.39	200	200.77	197
+200	M200x2	M200x2	2	6g	200	199.7	198.7	198.5	197.8	197.22	6H	197.84	198.21	198.7	198.98	200	200.57	198
+205	M205x6	M205x6	6	6g	204.9	204.3	201	200.7	198.43	197.01	6H	198.51	199.31	201.1	201.53	205	206.29	199
+205	M205x4	M205x4	4	6g	204.9	204.5	202.3	202.1	200.61	199.6	6H	200.67	201.27	202.4	202.78	205	205.95	201
+205	M205x3	M205x3	3	6g	205	204.6	203	202.8	201.7	200.91	6H	201.75	202.25	203.05	203.39	205	205.77	202
+205	M205x2	M205x2	2	6g	205	204.7	203.7	203.5	202.8	202.22	6H	202.84	203.21	203.7	203.98	205	205.57	203
+210	M210x8	M210x8	8	6g	209.9	209.2	204.7	204.3	201.24	199.42	6H	201.34	202.34	204.8	205.28	210	211.63	202
+210	M210x6	M210x6	6	6g	209.9	209.3	206	205.7	203.43	202.01	6H	203.51	204.31	206.1	206.53	210	211.29	204
+210	M210x4	M210x4	4	6g	209.9	209.5	207.3	207.1	205.61	204.6	6H	205.67	206.27	207.4	207.78	210	210.95	206
+210	M210x3	M210x3	3	6g	210	209.6	208	207.8	206.7	205.91	6H	206.75	207.25	208.05	208.39	210	210.77	207
+210	M210x2	M210x2	2	6g	210	209.7	208.7	208.5	207.8	207.22	6H	207.84	208.21	208.7	208.98	210	210.57	208
+215	M215x6	M215x6	6	6g	214.9	214.3	211	210.7	208.43	207.01	6H	208.51	209.31	211.1	211.53	215	216.29	209
+215	M215x4	M215x4	4	6g	214.9	214.5	212.3	212.1	210.61	209.6	6H	210.67	211.27	212.4	212.78	215	215.95	211
+215	M215x3	M215x3	3	6g	215	214.6	213	212.8	211.7	210.91	6H	211.75	212.25	213.05	213.39	215	215.77	212
+220	M220x8	M220x8	8	6g	219.9	219.2	214.7	214.3	211.24	209.42	6H	211.34	212.34	214.8	215.28	220	221.63	212
+220	M220x6	M220x6	6	6g	219.9	219.3	216	215.7	213.43	212.01	6H	213.51	214.31	216.1	216.53	220	221.29	214
+220	M220x4	M220x4	4	6g	219.9	219.5	217.3	217.1	215.61	214.6	6H	215.67	216.27	217.4	217.78	220	220.95	216
+220	M220x3	M220x3	3	6g	220	219.6	218	217.8	216.7	215.91	6H	216.75	217.25	218.05	218.39	220	220.77	217
+220	M220x2	M220x2	2	6g	220	219.7	218.7	218.5	217.8	217.22	6H	217.84	218.21	218.7	218.98	220	220.57	218
+225	M225x6	M225x6	6	6g	224.9	224.5	221	220.7	218.43	217.01	6H	218.51	219.31	221.1	221.53	225	226.29	219
+225	M225x4	M225x4	4	6g	224.9	224.5	222.3	222.1	220.61	219.6	6H	220.67	221.27	222.4	222.78	225	225.95	221
+225	M225x3	M225x3	3	6g	225	224.6	223	222.8	221.7	220.91	6H	221.75	222.25	223.05	223.39	225	225.77	222
+225	M225x2	M225x2	2	6g	225	224.7	223.7	223.5	222.8	222.22	6H	222.84	223.21	223.7	223.98	225	225.57	223
+230	M230x6	M230x6	6	6g	229.9	229.3	226	225.7	223.43	222.01	6H	223.51	224.31	226.1	226.53	230	231.29	224
+230	M230x4	M230x4	4	6g	229.9	229.5	227.3	227.1	225.61	224.6	6H	225.67	226.27	227.4	227.78	230	230.95	226
+230	M230x3	M230x3	3	6g	230	229.6	228	227.8	226.7	225.91	6H	226.75	227.25	228.05	228.39	230	230.77	227
+230	M230x2	M230x2	2	6g	230	229.7	228.7	228.5	227.8	227.22	6H	227.84	228.21	228.7	228.98	230	230.57	228
+235	M235x6	M235x6	6	6g	234.9	234.3	231	230.7	228.43	226.97	6H	228.51	229.31	231.1	231.58	235	236.34	229
+235	M235x4	M235x4	4	6g	234.9	234.5	232.3	232.1	230.61	229.6	6H	230.67	231.27	232.4	232.78	235	235.95	231
+235	M235x3	M235x3	3	6g	235	234.6	233	232.8	231.7	230.91	6H	231.75	232.25	233.05	233.39	235	235.77	232
+240	M240x8	M240x8	8	6g	239.9	239.2	234.7	234.3	231.24	229.42	6H	231.34	232.34	234.8	235.28	240	241.63	232
+240	M240x6	M240x6	6	6g	239.9	239.3	236	235.7	233.43	232.01	6H	233.51	234.31	236.1	236.53	240	241.29	234
+240	M240x4	M240x4	4	6g	239.9	239.5	237.3	237.1	235.61	234.6	6H	235.67	236.27	237.4	237.78	240	240.95	236
+240	M240x3	M240x3	3	6g	240	239.6	238	237.8	236.7	235.91	6H	236.75	237.25	238.05	238.39	240	240.77	237
+240	M240x2	M240x2	2	6g	240	239.7	238.7	238.5	237.8	237.22	6H	237.84	238.21	238.7	238.98	240	240.57	238
+245	M245x6	M245x6	6	6g	244.9	244.3	241	240.7	238.43	237.01	6H	238.51	239.31	241.1	241.53	245	246.29	239
+245	M245x4	M245x4	4	6g	244.9	244.5	242.3	242.1	240.61	239.6	6H	240.67	241.27	242.4	242.78	245	245.95	241
+245	M245x3	M245x3	3	6g	245	244.6	243	242.8	241.7	240.91	6H	241.75	242.25	243.05	243.39	245	245.77	242
+245	M245x2	M245x2	2	6g	245	244.7	243.7	243.5	242.8	242.22	6H	242.84	243.21	243.7	243.98	245	245.57	243
+250	M250x8	M250x8	8	6g	249.9	249.2	244.7	244.3	241.24	239.42	6H	241.34	242.34	244.8	245.28	250	251.63	242
+250	M250x6	M250x6	6	6g	249.9	249.3	246	245.7	243.43	242.01	6H	243.51	244.31	246.1	246.53	250	251.29	244
+250	M250x4	M250x4	4	6g	249.9	249.5	247.3	247.1	245.61	244.6	6H	245.67	246.27	247.4	247.78	250	250.95	246
+250	M250x3	M250x3	3	6g	250	249.6	248	247.8	246.7	245.91	6H	246.75	247.25	248.05	248.39	250	250.77	247
+250	M250x2	M250x2	2	6g	250	249.7	248.7	248.5	247.8	247.22	6H	247.84	248.21	248.7	248.98	250	250.57	248
+255	M255x6	M255x6	6	6g	254.9	254.3	251	250.7	248.43	246.97	6H	248.51	249.31	251.1	251.58	255	256.34	249
+255	M255x4	M255x4	4	6g	254.9	254.5	252.3	252.1	250.61	249.6	6H	250.67	251.27	252.4	252.78	255	255.95	251
+255	M255x3	M255x3	3	6g	255	254.6	253	252.8	251.7	250.91	6H	251.75	252.25	253.05	253.39	255	255.77	252
+260	M260x8	M260x8	8	6g	259.9	259.2	254.7	254.3	251.24	249.42	6H	251.34	252.34	254.8	255.28	260	261.63	252
+260	M260x6	M260x6	6	6g	259.9	259.3	256	255.7	253.43	252.01	6H	253.51	254.31	256.1	256.53	260	261.29	254
+260	M260x4	M260x4	4	6g	259.9	259.5	257.3	257.1	255.61	254.6	6H	255.67	256.27	257.4	257.78	260	260.95	256
+260	M260x3	M260x3	3	6g	260	259.6	258	257.8	256.7	255.91	6H	256.75	257.25	258.05	258.39	260	260.77	257
+265	M265x6	M265x6	6	6g	264.9	264.3	261	260.7	258.43	257.01	6H	258.51	259.31	261.1	261.53	265	266.29	259
+265	M265x4	M265x4	4	6g	264.9	264.5	262.3	262.1	260.61	259.6	6H	260.67	261.27	262.4	262.78	265	265.95	261
+265	M265x3	M265x3	3	6g	265	264.6	263	262.8	261.7	260.91	6H	261.75	262.25	263.05	263.39	265	265.77	262
+270	M270x6	M270x6	6	6g	269.9	269.3	266	265.7	263.43	262.01	6H	263.51	264.31	266.1	266.53	270	271.29	264
+270	M270x4	M270x4	4	6g	269.9	269.5	267.3	267.1	265.61	264.6	6H	265.67	266.27	267.4	267.78	270	270.95	266
+270	M270x3	M270x3	3	6g	270	269.6	268	267.8	266.7	265.91	6H	266.75	267.25	268.05	268.39	270	270.77	267
+275	M275x6	M275x6	6	6g	274.9	274.3	271	270.7	268.43	267.01	6H	268.51	269.31	271.1	271.53	275	276.29	269
+275	M275x4	M275x4	4	6g	274.9	274.5	272.3	272.1	270.61	269.6	6H	270.67	271.27	272.4	272.78	275	275.95	271
+275	M275x3	M275x3	3	6g	275	274.6	273	272.8	271.7	270.91	6H	271.75	272.25	273.05	273.39	275	275.77	272
+280	M280x8	M280x8	8	6g	279.9	279.2	274.7	274.3	271.24	269.42	6H	271.34	272.34	274.8	275.28	280	281.63	272
+280	M280x6	M280x6	6	6g	279.9	279.3	276	275.7	273.43	272.01	6H	273.51	274.31	276.1	276.53	280	281.29	274
+280	M280x4	M280x4	4	6g	279.9	279.5	277.3	277.1	275.61	274.6	6H	275.67	276.27	277.4	277.78	280	280.95	276
+280	M280x3	M280x3	3	6g	280	279.6	278	277.8	276.7	275.91	6H	276.75	277.25	278.05	278.39	280	280.77	277
+285	M285x6	M285x6	6	6g	284.9	284.3	281	280.7	278.43	277.01	6H	278.51	279.31	281.1	281.53	285	286.29	279
+285	M285x4	M285x4	4	6g	284.9	284.5	282.3	282.1	280.61	279.6	6H	280.67	281.27	282.4	282.78	285	285.95	281
+285	M285x3	M285x3	3	6g	285	284.6	283	282.8	281.7	280.91	6H	281.75	282.25	283.05	283.39	285	285.77	282
+290	M290x6	M290x6	6	6g	289.9	289.3	286	285.7	283.43	282.01	6H	283.51	284.31	286.1	286.53	290	291.29	284
+290	M290x4	M290x4	4	6g	289.9	289.5	287.3	287.1	285.61	284.6	6H	285.67	286.27	287.4	287.78	290	290.95	286
+290	M290x3	M290x3	3	6g	290	289.6	288	287.8	286.7	285.91	6H	286.75	287.25	288.05	288.39	290	290.77	287
+295	M295x6	M295x6	6	6g	294.9	294.3	291	290.7	288.43	287.01	6H	288.51	289.31	291.1	291.53	295	296.29	289
+295	M295x4	M295x4	4	6g	294.9	294.5	292.3	292.1	290.61	289.6	6H	290.67	291.27	292.4	292.78	295	295.95	291
+295	M295x3	M295x3	3	6g	295	294.6	293	292.8	291.7	290.91	6H	291.75	292.25	293.05	293.39	295	295.77	292
+300	M300x8	M300x8	8	6g	299.9	299.2	294.7	294.3	291.24	289.42	6H	291.34	292.34	294.8	295.28	300	301.63	292
+300	M300x6	M300x6	6	6g	299.9	299.3	296	295.7	293.43	292.01	6H	293.51	294.31	296.1	296.53	300	301.29	294
+300	M300x4	M300x4	4	6g	299.9	299.5	297.3	297.1	295.61	294.6	6H	295.67	296.27	297.4	297.78	300	300.95	296
+300	M300x3	M300x3	3	6g	300	299.6	298	297.8	296.7	295.91	6H	296.75	297.25	298.05	298.39	300	300.77	297
+310	M310x6	M310x6	6	6g	309.9	309.3	306	305.7	303.43	302.01	6H	303.51	304.31	306.1	306.53	310	311.29	304
+310	M310x4	M310x4	4	6g	309.9	309.5	307.3	307.1	305.61	304.6	6H	305.67	306.27	307.4	307.78	310	310.95	306
+320	M320x6	M320x6	6	6g	319.9	319.3	316	315.7	313.43	312.01	6H	313.51	314.31	316.1	316.53	320	321.29	314
+320	M320x4	M320x4	4	6g	319.9	319.5	317.3	317.1	315.61	314.6	6H	315.67	316.27	317.4	317.78	320	320.95	316
+330	M330x6	M330x6	6	6g	329.9	329.3	326	325.7	323.43	322.01	6H	323.51	324.31	326.1	326.53	330	331.29	324
+330	M330x4	M330x4	4	6g	329.9	329.5	327.3	327.1	325.61	324.6	6H	325.67	326.27	327.4	327.78	330	330.95	326
+340	M340x6	M340x6	6	6g	339.9	339.3	336	335.7	333.43	332.01	6H	333.51	334.31	336.1	336.53	340	341.29	334
+340	M340x4	M340x4	4	6g	339.9	339.5	337.3	337.1	335.61	334.6	6H	335.67	336.27	337.4	337.78	340	340.95	336
+350	M350x6	M350x6	6	6g	349.9	349.3	346	345.7	343.43	342.01	6H	343.51	344.31	346.1	346.53	350	351.29	344
+350	M350x4	M350x4	4	6g	349.9	349.5	347.3	347.1	345.61	344.6	6H	345.67	346.27	347.4	347.78	350	350.95	346
+360	M360x6	M360x6	6	6g	359.9	359.3	356	355.7	353.43	351.97	6H	353.51	354.31	356.1	356.58	360	361.34	354
+360	M360x4	M360x4	4	6g	359.9	359.5	357.3	357	355.61	354.58	6H	355.67	356.27	357.4	357.8	360	360.98	356
+370	M370x6	M370x6	6	6g	369.9	369.3	366	365.7	363.43	361.97	6H	363.51	364.31	366.1	366.58	370	371.34	364
+370	M370x4	M370x4	4	6g	369.9	369.5	367.3	367	365.61	364.58	6H	365.67	366.27	367.4	367.8	370	370.98	366
+380	M380x6	M380x6	6	6g	379.9	379.3	376	375.7	373.43	371.97	6H	373.51	374.31	376.1	376.58	380	381.34	374
+380	M380x4	M380x4	4	6g	379.9	379.5	377.3	377	375.61	374.58	6H	375.67	376.27	377.4	377.8	380	380.98	376
+390	M390x6	M390x6	6	6g	389.9	389.3	386	385.7	383.43	381.97	6H	383.51	384.31	386.1	386.58	390	391.34	384
+390	M390x4	M390x4	4	6g	389.9	389.5	387.3	387	385.61	384.58	6H	385.67	386.27	387.4	387.8	390	390.98	386
+400	M400x6	M400x6	6	6g	399.9	399.3	396	395.7	393.43	391.97	6H	393.51	394.31	396.1	396.58	400	401.34	394
+400	M400x4	M400x4	4	6g	399.9	399.5	397.3	397	395.61	394.58	6H	395.67	396.27	397.4	397.8	400	400.98	396
+410	M410x6	M410x6	6	6g	409.9	409.3	406	405.7	403.43	401.97	6H	403.51	404.31	406.1	406.58	410	411.34	404
+420	M420x6	M420x6	6	6g	419.9	419.3	416	415.7	413.43	411.97	6H	413.51	414.31	416.1	416.58	420	421.34	414
+430	M430x6	M430x6	6	6g	429.9	429.3	426	425.7	423.43	421.97	6H	423.51	424.31	426.1	426.58	430	431.34	424
+440	M440x6	M440x6	6	6g	439.9	439.3	436	435.7	433.43	431.97	6H	433.51	434.31	436.1	436.58	440	441.34	434
+450	M450x6	M450x6	6	6g	449.9	449.3	446	445.7	443.43	441.97	6H	443.51	444.31	446.1	446.58	450	451.34	444
+460	M460x6	M460x6	6	6g	459.9	459.3	456	455.7	453.43	451.97	6H	453.51	454.31	456.1	456.58	460	461.34	454
+470	M470x6	M470x6	6	6g	469.9	469.3	466	465.7	463.43	461.97	6H	463.51	464.31	466.1	466.58	470	471.34	464
+480	M480x6	M480x6	6	6g	479.9	479.3	476	475.7	473.43	471.97	6H	473.51	474.31	476.1	476.58	480	481.34	474
+490	M490x6	M490x6	6	6g	489.9	489.3	486	485.7	483.43	481.97	6H	483.51	484.31	486.1	486.58	490	491.34	484
+500	M500x6	M500x6	6	6g	499.9	499.3	496	495.7	493.43	491.97	6H	493.51	494.31	496.1	496.58	500	501.34	494
+510	M510x6	M510x6	6	6g	509.9	509.3	506	505.7	503.43	501.97	6H	503.51	504.31	506.1	506.58	510	511.34	504
+520	M520x6	M520x6	6	6g	519.9	519.3	516	515.7	513.43	511.97	6H	513.51	514.31	516.1	516.58	520	521.34	514
+530	M530x6	M530x6	6	6g	529.9	529.3	526	525.7	523.43	521.97	6H	523.51	524.31	526.1	526.58	530	531.34	524
+540	M540x6	M540x6	6	6g	539.9	539.3	536	535.7	533.43	531.97	6H	533.51	534.31	536.1	536.58	540	541.34	534
+550	M550x6	M550x6	6	6g	549.9	549.3	546	545.7	543.43	541.97	6H	543.51	544.31	546.1	546.58	550	551.34	544
+560	M560x6	M560x6	6	6g	559.9	559.3	556	555.7	553.43	551.97	6H	553.51	554.31	556.1	556.58	560	561.34	554
+570	M570x6	M570x6	6	6g	569.9	569.3	566	565.7	563.43	561.97	6H	563.51	564.31	566.1	566.58	570	571.34	564
+580	M580x6	M580x6	6	6g	579.9	579.3	576	575.7	573.43	571.97	6H	573.51	574.31	576.1	576.58	580	581.34	574
+590	M590x6	M590x6	6	6g	589.9	589.3	586	585.7	583.43	581.97	6H	583.51	584.31	586.1	586.58	590	591.34	584
+600	M600x6	M600x6	6	6g	599.9	599.3	596	595.7	593.43	591.97	6H	593.51	594.31	596.1	596.58	600	601.34	594
--- a/design/threads.xlsx
+++ b/design/threads.xlsx
--- a/docs/BSPPthread.md
+++ b/docs/BSPPthread.md
@@ -0,0 +1,26 @@
+# The Calculations Behind BSP-Parallel Thread
+
+The general approach is described in [Creating Thread Specs](./CreatingThreadSpecs.md). We explain the math here. The following figure is of great help to understand what is going on. Black profile: theoretical parting line. The profiles we are going to create are red (internal thread) and blue (external thread). Note that the red and blue profiles are drawn assuming identical pitch diameters for both to clarify the figure. However, in reality external and internal threads do not have the same pitch diameter (see below).
+
+![Parting line of BSP-parallel thread with simplified external and internal thread profiles overlayed](imgs/BSPthread.jpg)
+
+The relevant translation in done in the function calculateThreadlibSpecs() in BSPP_thread.awk.
+
+Steps:
+
+- Pitch (P): Taken from table BSPP_thread.csv
+- Pitch diameter: external threads aim for a somewhat smaller pitch diameter (DPitchExt), internal threads for a larger one (DPitchInt). threadlib aims at the center of the acceptable range given in BSPP_thread.csv. For external thread, we have to choose between class A and class B. We decided for class A.
+- Major diameter (for external thread, think minor diameter for internal thread) is chosen in the center of the acceptable range given in BSPP_thread.csv => DMaxExt, DMinInt
+- Support diameter (DSupportExt, DSupportInt): Must be on the right side of the parting line. Otherwise no requirements from the norm. We choose the pitch diameter +/- 2 * 5/12 * H, where H is the full heigt of the fundamental triangle and +/- depends on external / internal thread. This is the middle between intended major / minor diameter and the corner of the fundamental triangle.
+- The valleys of the actual part will be defined by the support (see above). The valleys of the profile are chosen to overlap somewhat with the support => DValleyExt, DValleyInt (these correspond to Rrot).
+
+
+However, this is not yet what we need. As we do not want the rounding in the profile, we have to adjust the "crest" diameters of the straightened profile accordingly. Again, the criterion is to define create a profile that strictly remains on its own side of the parting line.
+
+![Formula to calculate r_crest](https://quicklatex.com/cache3/38/ql_000121f710d4df1820cd5937b27b7838_l3.png)
+
+![The 4 points of the thread profile in OpenSCADs x-y plane](imgs/ThreadProfile.png)
+
+Finally, we need the points (dr_i, z_i) of the thread profile. The radii are
+simple: 0, 0, (DCrest - DValley) / 2, (DCrest - DValley) / 2.  To calculate the corresponding z-values, we use the triangle given by (half of) the crest / valley line and the corner of the fundamental triangle (compare first figure).  Half of the lines length is then calculated as the height of said triangle times tan(phi/2). Using this we calculate all 4 z-values from the crest- and valley radii.
+
--- a/docs/CreatingThreadSpecs.md
+++ b/docs/CreatingThreadSpecs.md
@@ -0,0 +1,137 @@
+# Creating Thread Specs
+
+In the following, we explain how a thread spec (i.e., an entry in THREAD_TABLE) is created. First, we will explain the basics of threads and how they are specified in the norms. Then, we will ellaborate on the specifics to translate those into threadlib thread specs.
+
+
+## Thread Basics
+
+
+To do this, we use British Standard Pipe parallel (BSPP) thread as an example (see drawing below). The bold curve shows the parting line between internal and external thread. In an ideal world, both threads are created according to the parting line. The parting line of BSP thread is based on a fundamental triangle with a 55-degree angle rounded to a radius r.
+
+![BSPP thread drawing](http://mdmetric.com/tech/55deg228.gif) 
+
+     BSPP thread drawing. Source: Maryland Metrics.
+
+Reality is a bit more complicated: If one of the threads deviates only a little in the wrong direction, the threads collide. Therefore, the pitch radius r_pitch (radius where distance between falling and rising edges is exactly P/2) of the external thread has to be reduced a little bit (and vice versa for the internal thread). Also, major and minor radii are adjusted so that the real thread is guaranteed to remain on its own side of the theoretical parting line.
+
+Of course, it is not ok to introduce arbitrarily large allowances: The norm (BS EN ISO 228-1: 2003 in this case) gives the necessary constraints. Quoting [Maryland Metrics thread data charts for BSP thread](http://mdmetric.com/tech/thddat7.htm): 
+
+<table>
+ <tr>
+ <td colspan="7" align="center" valign="bottom"></td>
+ <td colspan="5" align="center" valign="bottom">Tolerances on pitch diametera</td>
+ <td colspan="2" align="center" valign="bottom">Tolerance on minor diameter</td>
+ <td colspan="2" align="center" valign="bottom">Tolerance on major diameter</td>
+ </tr>
+ <tr>
+ <td colspan="4" align="center" valign="bottom"></td>
+ <td colspan="3" align="center" valign="bottom">Diameters</td>
+ <td colspan="2" align="center" valign="bottom">Internal thread TD2</td>
+ <td colspan="3" align="center" valign="bottom">External thread Td2</td>
+ <td colspan="2" align="center" valign="bottom">Internal thread TD1</td>
+ <td colspan="2" align="center" valign="bottom">External thread Td</td>
+ </tr>
+ <tr>
+ <td align="center" valign="bottom">Desig-nation of thread</td>
+ <td align="center" valign="bottom">Number of threads in 25.4 mm</td>
+ <td align="center" valign="bottom">Pitch    P</td>
+ <td align="center" valign="bottom">Height of thread    h</td>
+ <td align="center" valign="bottom">major d  = D</td>
+ <td align="center" valign="bottom">pitch d2  = D2</td>
+ <td align="center" valign="bottom">minor d1  = D1</td>
+ <td align="center" valign="bottom">Lower deviation</td>
+ <td align="center" valign="bottom">Upper deviation</td>
+ <td align="center" valign="bottom">Lower deviation Class A</td>
+ <td align="center" valign="bottom">Lower deviation Class B</td>
+ <td align="center" valign="bottom">Upper deviation</td>
+ <td align="center" valign="bottom">Lower deviation</td>
+ <td align="center" valign="bottom">Upper deviation</td>
+ <td align="center" valign="bottom">Lower deviation</td>
+ <td align="center" valign="bottom">Upper deviation</td>
+ </tr>
+ <tr>
+ <td align="center" valign="bottom">1/16</td>
+ <td align="center" valign="bottom">28</td>
+ <td align="center" valign="bottom">0.907</td>
+ <td align="center" valign="bottom">0.581</td>
+ <td align="center" valign="bottom">7.723</td>
+ <td align="center" valign="bottom">7.142</td>
+ <td align="center" valign="bottom">6.561</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0.107</td>
+ <td align="center" valign="bottom">-0.107</td>
+ <td align="center" valign="bottom">-0.214</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0.282</td>
+ <td align="center" valign="bottom">-0.214</td>
+ <td align="center" valign="bottom">0</td>
+ </tr>
+ <tr>
+ <td align="center" valign="bottom">1/8</td>
+ <td align="center" valign="bottom">28</td>
+ <td align="center" valign="bottom">0.907</td>
+ <td align="center" valign="bottom">0.581</td>
+ <td align="center" valign="bottom">9.728</td>
+ <td align="center" valign="bottom">9.147</td>
+ <td align="center" valign="bottom">8.566</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0.107</td>
+ <td align="center" valign="bottom">-0.107</td>
+ <td align="center" valign="bottom">-0.214</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0.282</td>
+ <td align="center" valign="bottom">-0.214</td>
+ <td align="center" valign="bottom">0</td>
+ </tr>
+ <tr>
+ <td align="center" valign="bottom">1/4</td>
+ <td align="center" valign="bottom">19</td>
+ <td align="center" valign="bottom">1.337</td>
+ <td align="center" valign="bottom">0.856</td>
+ <td align="center" valign="bottom">13.157</td>
+ <td align="center" valign="bottom">12.301</td>
+ <td align="center" valign="bottom">11.445</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0.125</td>
+ <td align="center" valign="bottom">-0.125</td>
+ <td align="center" valign="bottom">-0.25</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0</td>
+ <td align="center" valign="bottom">0.445</td>
+ <td align="center" valign="bottom">-0.25</td>
+ <td align="center" valign="bottom">0</td>
+ </tr>
+</table>
+
+
+## Deriving threadlib Specs
+
+To simplify the thread profile, we want to avoid the rounding and replace it by a trapezoidal edge as shown in here (red: internal, blue external thread): 
+
+![threadlib profile compared to BSP parting line](imgs/BSPthread.jpg)
+ 
+It is clear that we have to match the pitch as accurately as possible.  Therefore, threadlibs P is equal to the pitch in the norm (for G1/16: 0.907 mm).
+
+Then, we choose the pitch diameter to be in the center of the given tolerance range. For G1/16 this is (7.723 + 0.107/2) mm. 
+
+To explain the choice of r_major and r_minor for both external and internal threads simultaneously, we use the terms r_crest and r_valley. r_crest is the major/minor radius (external/internal) and r_valley is the minor/major radius (external/internal). The norm does not give limits for r_valley. But threadlib requires that the threadprofile covers *less* than 1 pitch of thread. Therefore, we arbitrarily choose a small but finite width of "valley floor" that leaves ample clearance to the parting line. For r_crest, we to take into account
+
+a) the allowed deviations given in the norm
+b) the rounding (that we want to leave away)
+
+The former is simple: We aim for the center. The latter requires a little math: We want our piecewise linear profile to remain on one side of the (true) BSP profile. Therefore, our crest radius has to be equal to the radius where the straight rising edge of the BSP profile touches the circle of the rounding.
+
+
+## Adding Specs to threadlib
+
+To get the threads into threadlib, we currently do the following: 
+
+- Add csv-file with original thread specs in design (e.g., "newthreads.csv")
+- Write an awk script (e.g., design/newthreads.awk) that translates this .csv file to tabular threadlib specs
+- Modify Makefile: Add a line like "cat design/newthreads.csv | awk -f design/newthreads.awk >> design/THREAD_TABLE.csv")
+- design/autogenerate.awk will translate the resulting THREAD_TABLE.csv into the final THREAD_TABLE.scad (same as the .csv but with added quoting and bracketing).
+
+Furthermore, we should extend tests/test_table.awk to test our newly created threads. The very minimum is to add a test for the thread angles. Perform the tests by running 'make test' in the top-level directory or 'make' inside the tests subdirectory. If it prints "TESTS SUCCESSFUL" you are probably fine. Note: If you have a thread spec that is not tested at all, the tests will fail, too.
+
--- a/docs/DesignOfThreadlib.md
+++ b/docs/DesignOfThreadlib.md
@@ -0,0 +1,52 @@
+# Design of threadlib
+
+The structure of threadlib is very simple and consists of only two files:
+
+- threadlib.scad
+- THREAD_TABLE.scad
+
+The former provides the code to generate threads, bolts, and nuts. The latter simply holds a large dictionary (named THREAD_TABLE) providing the thread-specs given a thread-designator.
+
+THREAD_TABLE is a vector of vectors called "entries". Every entry has the following format:
+
+
+    [DESIGNATOR, [P, Rrot, Dsup, profile]]
+
+where
+
+- DESIGNATOR: Name of thread. E.g. "M6x0.5-ext"
+- P: Pitch of the thread
+- Rrot: Radius of rotation used for later "extrusion" of the thread. Rrot is positive for external threads and negative for internal threads.
+- Dsup: Recommended diameter of support structure of the thread (i.e., of cylinder for external thread and hole for internal thread)
+- profile: A vector of 2D [delta_r, z]-vectors describing the shape of the thread
+
+Let's look at an example:
+
+    ["M4-int", [0.7, -2.1095, 4.1095,
+                [
+                 [0, 0.3465], 
+                 [0, -0.3465], 
+                 [0.43304671, -0.09648036], 
+                 [0.43304671, 0.09648036]
+                ]]]
+
+
+## Definition of profile
+
+profile is a list of vectors in OpenSCADs x-y plane. x corresponds to the radial direction of the screw, z is the axis of the threads helix.
+
+![Thread Profile](imgs/ThreadProfile.png)
+
+In many cases, profile consists of 4 points. However, the number of points is not limited: You can use as many as you need. For external threads, the profile is specified in the right-hand side of the x-y plane. For internal threads, the left-hand side is used (i.e., the radius-values are negative). This is useful to make corresponding male and female threads match without extra operations: The female thread has rotated by half a turn when it arrives on the right-hand side of the x-y plane, thereby nicely fitting in between two turns of the male thread.
+
+
+## Redundancy?
+
+Why do we need P, Rrot, Dsup, *and* profile? Can we not include everything in profile? Unfortunately, we can't. The reasons are a) lead-in / lead-out tapers ("lilo-tapers") and b) overlap between thread and support to avoid rendering problems.
+
+*lilo-tapers*: To make the tapers, the profile is scaled-down at the ends. We need to know where the profile is scaled to (center of scaling). We solve this by specifying the radius of rotation for extrusion Rrot explicitly and subtract it from profile (profile holds [dr, z] instead of [r, z]). lilo-tapers are then created by scaling towards dr=0.
+
+*Overlap 1*: We could include P in profile by requiring that profile extends over exactly one period (i.e., P). However, this would result in a helix where neighbouring periods would exactly touch each other. This leads to rendering artifacts => P is stored seperately and profile is *required* to cover *less* than a period. 
+
+*Overlap 2*: But hey! Dsup = 2 * Rrot, no? In principle yes, but in that case thread and bolt would *just* touch => rendering problems. But we could implicitly assume that Rrot is simply 1% smaller than Dsup / 2 for external threads (and 1% larger for internal threads)! Yes, we could. But we decided to make that choice explicit rather than implicit.
+
--- a/docs/MetricThread.md
+++ b/docs/MetricThread.md
@@ -0,0 +1,15 @@
+# Metric Thread
+
+![Metric thread specs](http://mdmetric.com/tech/din13pix.jpg)
+
+metric_thread.csv provides the numbers given in the norm (no thinking done there, just copying). metric_thread.awk - as usual - calculates the threadlib specs. 
+
+- Designator: use the simplified variant
+- Pitch diameters: Choose the center of the tolerance range
+- Support diameters: Center of tol. range
+- Valley diameter: Border of tol. range so that overlap with support is assured
+- Crest diameters: Center of tol. range
+
+## Specialties
+
+For some internal threads, we get a valley diameter that is on the corner or even outside the fundamental triangle. This would lead to one turn of the thread overlapping with the next turn which we need to avoid. Therefore, we have a built-in check to limit the valley diameter to a safe range.
--- a/docs/UnitTests.md
+++ b/docs/UnitTests.md
@@ -0,0 +1,61 @@
+# Unit Tests
+
+We use unit tests as a means of quality assurance for threadlib.
+
+
+## THREAD_TABLE.scad
+
+The thread table is tested using an awk script. See [The GNU Awk User's Guide](https://www.gnu.org/software/gawk/manual/gawk.html) for (more than) an introduction to awk. Note that development of threadlib is based not on GNU awk but on MacOSs version of awk, which is mostly - but not completely - compatible.
+
+Every line of THREAD_TABLE.scad is fed to [tests/test_table.awk](../tests/test_table.awk). test_table.awk then runs appropriate tests for every line. Which tests are appropriate are determined by looking at the thread designator. For example:
+
+	/"[^,]+-ext/ {
+		# external threads have positive Rrot 
+		parse();
+		if (Rrot < 0) {
+			print designator " FAIL: negative radius of rotation";
+			PASS = 0;
+		}
+		# test overlapp between thread and support
+		if (Rrot > Dsupport / 2) {
+			print designator " FAIL: Rsupport < Rrot";
+			PASS = 0;
+		}
+	}
+
+The pattern /"[^,]+-ext/ means: Run this code for every line that contains double quotes followed by a non-zero (+) number of non-comma characters ([^,]) followed by the string "-ext". I.e, the code is run for every external thread.  The code (everything between {}) tests the following assumptions: 1. every external thread must have positive Rrot 2. there must be some overlap between thread and support (i.e. Rrot > Dsupport / 2).
+
+More specific tests verify, e.g., that the thread angles are correct. Not all threads have the same thread angles, therefore we have to distinguish, e.g., between metric threads (designator "M...") and BSPP threads (designator "G..."). Example:
+
+	/M[0-9.x-]+-ext/ {
+		# ext M threads have +/-60 deg slopes, horizontal crest / valley
+		parse();
+		m1 = slope(v0, v3) / deg;
+		m2 = slope(v2, v1) / deg;
+		if (m1 > 60 + dphi || m1 < 60 - dphi \
+		    || m2 < -60 - dphi || m2 > -60 + dphi) {
+			print designator " FAIL: " m1 ", " m2 " deg";
+			PASS = 0;
+		};
+		test_horizontal();
+		tested = 1;
+	}
+
+Note that:
+
+- This test uses functions. These are defined at the top of the awk script.
+- This test will run *in addition* to the more general test discussed above. It does not *replace* the previous test.
+
+Furthermore, we track whether tests fail. This is done in 2 ways:
+
+- If a test fails it prints an error to the screen
+- If a test fails the variable PASS is set to zero
+
+At the very end (END {...}), the awk script tests the value of PASS. If all tests were successfull, it still has its initial value of 1 (set in the BEGIN {...} block). Otherwise, it is 0.
+
+Finally, we have assured that every thread is tested. A thread that is not tested at all is considered a FAIL. This is done via two match-all rules: The first initialized the variable 'tested' to 0. The last verifies that it has been set to 1 by one of the test. If it is still zero, this particular thread has not been tested at all.
+
+## threadlib.scad
+
+We intend to add tests for threadlib.scad itself. E.g. by actually rendering a pair of external and internal threads and verifying the number of volumes created. Currently, we do not have these tests yet.
+
--- a/docs/imgs/ThreadProfile.png
+++ b/docs/imgs/ThreadProfile.png
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -0,0 +1,4 @@
+.PHONY: test
+test:
+	@cat ../THREAD_TABLE.scad | awk -f test_table.awk
+
--- a/tests/test_table.awk
+++ b/tests/test_table.awk
@@ -0,0 +1,188 @@
+function parse() {
+	gsub(/[]\[" ]/, "");
+
+	designator = $1;
+	pitch = $2;
+	Rrot = $3;
+	Dsupport = $4;
+	v0[1] = $5;
+	v0[0] = $6;
+
+	v1[1] = $7;
+	v1[0] = $8;
+
+	v2[1] = $9;
+	v2[0] = $10;
+
+	v3[1] = $11;
+	v3[0] = $12;
+}
+
+function slope(x, y) {
+	# return the slope from vector x to vector y
+	return atan2(y[1] - x[1], y[0] - x[0])
+}
+
+function test_horizontal() {
+	# test whether v0 and v1 as well as v2 and v3 have the same radius
+	if (v0[1] != v1[1] || v2[1] != v3[1]) {
+		print designator " FAIL: not horizontal";
+		PASS = 0;
+	}
+}
+
+BEGIN	{
+	# define useful constants
+	FS = ","; 
+	pi = atan2(0, -1);
+	deg = pi / 180;
+	dphi = 0.1;
+
+	PASS = 1;
+	NR_OF_TESTS = 0;
+	NR_OF_THREADS = 0;
+}
+
+{ 	# first match-all rule: set state to untested
+	tested = 0;
+}
+
+/"[^,]+-ext/ {
+	# external threads have positive Rrot 
+	parse();
+	if (Rrot < 0) {
+		print designator " FAIL: negative radius of rotation";
+		PASS = 0;
+	}
+	# test overlapp between thread and support
+	if (Rrot > Dsupport / 2) {
+		print designator " FAIL: Rsupport < Rrot";
+		PASS = 0;
+	}
+	NR_OF_TESTS += 2;
+}
+
+/"[^,]+-int/ {
+	# internal threads have negative Rrot 
+	parse();
+	if (Rrot > 0) {
+		print designator " FAIL: positive radius of rotation";
+		PASS = 0;
+	}
+	# test overlapp between thread and support
+	if (-Rrot < Dsupport / 2) {
+		print designator " FAIL: Rsupport > Rrot";
+		PASS = 0;
+	}
+	NR_OF_TESTS += 2;
+}
+
+/((M[0-9.x-]+)|(UN([CF]|EF)[\/\#0-9-]+)|([0-9]+-UN-[\/\#0-9-]+))ext/ {
+	# ext M, UN*, and *-UN threads have +/-60 deg slopes, horizontal crest / valley
+	parse();
+	m1 = slope(v0, v3) / deg;
+	m2 = slope(v2, v1) / deg;
+	if (m1 > 60 + dphi || m1 < 60 - dphi \
+	    || m2 < -60 - dphi || m2 > -60 + dphi) {
+		print designator " FAIL: " m1 ", " m2 " deg";
+		PASS = 0;
+	};
+	test_horizontal();
+	tested = 1;
+	NR_OF_TESTS += 2;
+}
+
+/((M[0-9.x-]+)|(UN([CF]|EF)[\/\#0-9-]+)|([0-9]+-UN-[\/\#0-9-]+))int/ {
+	# int M, UN*, and *-UN threads have +/-60 deg slopes, horizontal crest / valley
+	parse();
+	m1 = slope(v3, v0) / deg;
+	m2 = slope(v1, v2) / deg;
+	if (m1 > -60 + dphi || m1 < -60 - dphi \
+	    || m2 < 60 - dphi || m2 > 60 + dphi) {
+		print designator " FAIL: " m1 ", " m2 " deg";
+		PASS = 0;
+	}
+	test_horizontal();
+	tested = 1;
+	NR_OF_TESTS += 2;
+}
+
+/G.+-ext/ { 
+	# ext M threads have +/-62.5 deg slopes, horizontal crest / valley
+	parse();
+	m1 = slope(v0, v3) / deg;
+	m2 = slope(v2, v1) / deg;
+	if (m1 > 62.5 + dphi || m1 < 62.5 - dphi \
+	    || m2 < -62.5 - dphi || m2 > -62.5 + dphi) {
+		print designator " FAIL: " m1 ", " m2 " deg";
+		PASS = 0;
+	}
+	test_horizontal();
+	tested = 1;
+	NR_OF_TESTS += 2;
+}
+	
+/G.+-int/ { 
+	# int G threads have +/-62.5 deg slopes, horizontal crest / valley
+	parse();
+	m1 = slope(v3, v0) / deg;
+	m2 = slope(v1, v2) / deg;
+	if (m1 > -62.5 + dphi || m1 < -62.5 - dphi \
+	    || m2 < 62.5 - dphi || m2 > 62.5 + dphi) {
+		print designator " FAIL: " m1 ", " m2 " deg";
+		PASS = 0;
+	}
+	test_horizontal();
+	tested = 1;
+	NR_OF_TESTS += 2;
+}
+
+/PCO.+-ext/ { 
+	# PCO-1881 threads have slopes of -80 deg (on the load side) and 70 deg
+	# (on the other side) + horizontal crest / valley
+	parse();
+	m1 = slope(v0, v3) / deg;
+	m2 = slope(v2, v1) / deg;
+	if (m1 > 70 + dphi || m1 < 70 - dphi \
+	    || m2 < -80 - dphi || m2 > -80 + dphi) {
+		print designator " FAIL: " m1 ", " m2 " deg";
+		PASS = 0;
+	}
+	test_horizontal();
+	tested = 1;
+	NR_OF_TESTS += 2;
+}
+
+/PCO.+-int/ { 
+	# PCO-1881 threads have slopes of 80 deg (on the load side) and -70 deg
+	# (on the other side) + horizontal crest / valley
+	parse();
+	m1 = slope(v3, v0) / deg;
+	m2 = slope(v1, v2) / deg;
+	if (m1 > -70 + dphi || m1 < -70 - dphi \
+	    || m2 < 80 - dphi || m2 > 80 + dphi) {
+		print designator " FAIL: " m1 ", " m2 " deg";
+		PASS = 0;
+	}
+	test_horizontal();
+	tested = 1;
+	NR_OF_TESTS += 2;
+}
+
+/[^,]+-(int|ext)/ {
+	# final match-all (designators) rule: test wether all lines have been
+	# tested
+	if (tested == 0) {
+		parse();
+		print designator " FAIL: not tested";
+		PASS = 0;
+	};
+	NR_OF_THREADS += 1;
+}
+
+END {
+	print "Ran " NR_OF_TESTS " tests on " NR_OF_THREADS " threads";
+	if (PASS == 1) print "TESTS SUCCESSFUL"
+	else print "TESTS FAIL";
+}
+
--- a/threadlib.scad
+++ b/threadlib.scad
@@ -5,11 +5,11 @@ threadlib
 Create threads easily.

 :Author: Adrian Schlatter
-:Date: 2019-04-07
+:Date: 2019-11-11
 :License: 3-Clause BSD. See LICENSE.
 */

-function __THREADLIB_VERSION() = 0.2;
+function __THREADLIB_VERSION() = 0.3;

 use <thread_profile.scad>
 include <THREAD_TABLE.scad>
@@ -49,8 +49,7 @@ module nut(designator, turns, Douter, higbee_arc=20, fn=120, table=THREAD_TABLE)
        specs = thread_specs(str(designator, "-int"), table=table);
        P = specs[0]; Dsupport = specs[2];
        H = (turns + 1) * P;        
-        rotate(180)
-            thread(str(designator, "-int"), turns=turns, higbee_arc=higbee_arc, fn=fn, table=table);
+        thread(str(designator, "-int"), turns=turns, higbee_arc=higbee_arc, fn=fn, table=table);

        translate([0, 0, -P / 2])
            difference() {