- dir structure (docs, tests, design)

- renderings for README.rst

docs/nutNbolt.scad

@@ -0,0 +1,26 @@
+/*
+Create nice previews for documentation
+
+:Author: Adrian Schlatter
+:Date: 2019-04-10
+:License: 3-Clause BSD. See LICENSE.
+*/
+
+use <threadlib/threadlib.scad>
+
+type = "M6";
+turns = 6;
+higbee_arc = 45;
+
+P = thread_specs(str(type, "-ext"))[0];
+dz = (turns / 2 - 1/4) * P;
+Douter = thread_specs(str(type, "-int"))[2] * 1.5;
+
+translate([0, 0, dz])
+    rotate([0, 0, -90])
+        bolt(type, turns, higbee_arc=higbee_arc);
+intersection() {
+    nut(type, turns, Douter, higbee_arc=higbee_arc);
+    translate([-100, 0, 0])
+        cube([200, 200, 200]);
+};