moved the corner_3d_connector over to the extrusion brackets

tests/corner_3d_connectors.scad

@@ -1,55 +0,0 @@
-//
-// NopSCADlib Copyright Chris Palmer 2021
-// nop.head@gmail.com
-// hydraraptor.blogspot.com
-//
-// This file is part of NopSCADlib.
-//
-// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
-// GNU General Public License as published by the Free Software Foundation, either version 3 of
-// the License, or (at your option) any later version.
-//
-// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
-// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-// See the GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License along with NopSCADlib.
-// If not, see <https://www.gnu.org/licenses/>.
-//
-include <../vitamins/corner_3d_connectors.scad>
-include <../vitamins/extrusions.scad>
-
-module corner_connector(with_profiles = false, corner_connector_type, extrusion_type) {
-    extrusion_length = 40;
-    corner_3d_connector(corner_connector_type, grub_screws=true);
-    if(with_profiles){
-        translate([0,0,extrusion_length/2])
-        extrusion(extrusion_type, extrusion_length);
-        translate(corner_3d_connector_get_y_offset(corner_connector_type))
-        rotate(corner_3d_connector_get_y_rot(corner_connector_type))
-        translate([0,0,extrusion_length/2])
-        extrusion(extrusion_type, extrusion_length);
-        translate(corner_3d_connector_get_x_offset(corner_connector_type))
-        rotate(corner_3d_connector_get_x_rot(corner_connector_type))
-        translate([0,0,extrusion_length/2])
-        extrusion(extrusion_type, extrusion_length);
-    }
-}
-
-module corner_connectors(with_profiles = false) {
-corner_connector(with_profiles, corner_3d_connector_2020, E2020);
-
-
-translate([100,0,0])
-corner_connector(with_profiles, corner_3d_connector_3030, E3030);
-
-
-translate([220,0,0])
-corner_connector(with_profiles, corner_3d_connector_4040, E4040);
-}
-
-$show_threads=false;
-corner_connectors();
-translate ([0,100,0])
-corner_connectors(true);
-

tests/extrusion_brackets.scad

@@ -31,17 +31,43 @@ module inner_bracket_test(bracket, backwards = false)
     tnut = extrusion_inner_corner_bracket_tnut(bracket);
 
     translate([backwards ? -eWidth : 0, 0])
-            extrusion_inner_corner_bracket(bracket, backwards = backwards);
+      extrusion_inner_corner_bracket(bracket, backwards=backwards);
 
     translate([-eWidth / 2, 0])
       rotate([-90, 0, 0])
-                extrusion(extrusion, size.x - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole = eWidth > 20);
+        extrusion(extrusion, size.x - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole=eWidth > 20);
 
     translate([-eWidth, -eWidth / 2])
       rotate([0, 90, 0])
-                extrusion(extrusion, eWidth + size.y - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole = eWidth > 20);
+        extrusion(extrusion, eWidth + size.y - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole=eWidth > 20);
   }
 
+module corner_3d_connector(with_profiles = false, corner_connector_type, extrusion_type) {
+  extrusion_length = 40;
+  extrusion_corner_bracket_3D(corner_connector_type, grub_screws=true);
+  if (with_profiles) {
+    translate([0, 0, extrusion_length / 2])
+      extrusion(extrusion_type, extrusion_length);
+    translate(extrusion_corner_bracket_3D_get_y_offset(corner_connector_type))
+      rotate(extrusion_corner_bracket_3D_get_y_rot(corner_connector_type))
+        translate([0, 0, extrusion_length / 2])
+          extrusion(extrusion_type, extrusion_length);
+    translate(extrusion_corner_bracket_3D_get_x_offset(corner_connector_type))
+      rotate(extrusion_corner_bracket_3D_get_x_rot(corner_connector_type))
+        translate([0, 0, extrusion_length / 2])
+          extrusion(extrusion_type, extrusion_length);
+  }
+}
+
+module corner_3d_connectors(with_profiles = false) {
+  corner_3d_connector(with_profiles, extrusion_corner_bracket_3D_2020, E2020);
+
+  translate([80, 0, 0])
+    corner_3d_connector(with_profiles, extrusion_corner_bracket_3D_3030, E3030);
+
+  translate([180, 0, 0])
+    corner_3d_connector(with_profiles, extrusion_corner_bracket_3D_4040, E4040);
+}
 
 module bracket_test(bracket)
   rotate([90, 0, 180]) {
@@ -53,19 +79,18 @@ module bracket_test(bracket)
 
     translate([-eWidth / 2, 0])
       rotate([-90, 0, 0])
-                extrusion(extrusion, size.y, false, cornerHole = eWidth > 20);
+        extrusion(extrusion, size.y, false, cornerHole=eWidth > 20);
 
     translate([-eWidth, -eWidth / 2])
       rotate([0, 90, 0])
-                extrusion(extrusion, eWidth + size.x, false, cornerHole = eWidth > 20);
+        extrusion(extrusion, eWidth + size.x, false, cornerHole=eWidth > 20);
   }
 
-
 module extrusion_brackets(examples = false) {
   extrusion_inner_corner_bracket(E20_inner_corner_bracket);
 
   translate([30, 0])
-        extrusion_inner_corner_bracket(E20_inner_corner_bracket, grub_screws = false);
+    extrusion_inner_corner_bracket(E20_inner_corner_bracket, grub_screws=false);
 
   translate([60, 0])
     extrusion_corner_bracket_assembly(E20_corner_bracket);
@@ -76,7 +101,7 @@ module extrusion_brackets(examples = false) {
   translate([140, 0])
     extrusion_corner_bracket_assembly(E40_corner_bracket);
 
-    if(examples) {
+  if (examples) {
     translate([20, 50, 10])
       inner_bracket_test(E20_inner_corner_bracket, true);
 
@@ -92,8 +117,16 @@ module extrusion_brackets(examples = false) {
     translate([100, 130, 10])
       bracket_test(E40_corner_bracket);
   }
+
+  //the 3d connectors
+  translate([0, -30, 0])
+    corner_3d_connectors();
+  if (examples) {
+    translate([0, -110, 0])
+      corner_3d_connectors(true);
+  }
 }
 
-if($preview)
+if ($preview)
-    let($show_threads = true)
+  let ($show_threads = true)
   extrusion_brackets(true);

vitamins/corner_3d_connector.scad

@@ -1,187 +0,0 @@
-//
-// NopSCADlib Copyright Chris Palmer 2021
-// nop.head@gmail.com
-// hydraraptor.blogspot.com
-//
-// This file is part of NopSCADlib.
-//
-// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
-// GNU General Public License as published by the Free Software Foundation, either version 3 of
-// the License, or (at your option) any later version.
-//
-// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
-// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-// See the GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License along with NopSCADlib.
-// If not, see <https://www.gnu.org/licenses/>.
-//
-
-//
-//! Default is steel but can be drawn as brass or nylon. A utility for making nut traps included.
-//!
-//! 3D corner connector with t-nut 
-//!
-//! The following diagram shows you the parameters for the nut parameters:
-//!
-//! ![](docs/sliding_t_nut.png)
-//
-
-include <NopSCADlib/core.scad>
-include <../utils/thread.scad>
-//include <NopSCADlib/vitamins/screws.scad>
-
-
-
-
-function corner_3d_connector_outer_side_length(type) = type[1]; //! The length of the base cuboid sides
-function corner_3d_connector_outer_height(type) = type[2]; //! The height of the cuboid
-function corner_3d_connector_inner_side_length(type)= type[3]; //! The length of the dip in the cuboid sides
-function corner_3d_connector_inner_height(type) = type[4]; //! The depth offset of the dip in the cuboid
-
-function corner_3d_connector_nut_screw(type) = type[5]; //! The screw (most likely Mx_grub_screw from <NopSCADlib/vitamins/screws.scad>)
-function corner_3d_connector_nut_dia(type) = type[6]; //! The width of bottom part of the nut
-function corner_3d_connector_nut_thickness(type) = type[7]; //! The thickness of the top part of the nut
-function corner_3d_connector_nut_nyloc_thickness(type) = type[8]; //! The total thickness of the nut
-function corner_3d_connector_nut_sx(type) = type[9]; //! The length of the nuts
-function corner_3d_connector_nut_ty1(type) = type[10]; //! The total width of the nut
-function corner_3d_connector_nut_ty2(type) = type[11]; //! The width of the top edge of the nut
-function corner_3d_connector_nut_screws_hor(type) = type[12]; //! The positions of the screw holes on the horizontal arms, expressed in %/100 of the nut arm
-function corner_3d_connector_nut_screws_ver(type) = type[13]; //! The positions of the screw holes on the vertical arms, expressed in %/100 of the nut arm
-
-
-function corner_3d_connector_get_y_offset(type) = [0,-corner_3d_connector_outer_side_length(type)/2,corner_3d_connector_nut_nyloc_thickness(type)]; //! helper function to position the y beam
-function corner_3d_connector_get_y_rot(type) = [90,0,0]; //! helper function to rotate the y beam
-function corner_3d_connector_get_x_offset(type) = [corner_3d_connector_outer_side_length(type)/2,0,corner_3d_connector_nut_nyloc_thickness(type)]; //! helper function to position the x beam
-function corner_3d_connector_get_x_rot(type) = [0,90,0]; //! helper function to rotate the y beam
-
-
-module corner_3d_connector (type, grub_screws = true) { //! draw the specified corner_3d_connector
-
-    nut_screw_dia = screw_radius(corner_3d_connector_nut_screw(type)*2);
-    nut_dia = corner_3d_connector_nut_dia(type);
-    nut_thickness = corner_3d_connector_nut_thickness(type);
-    nut_nyloc_thickness = corner_3d_connector_nut_nyloc_thickness(type);
-    nut_sx = corner_3d_connector_nut_sx(type);
-    nut_ty1 = corner_3d_connector_nut_ty1(type);
-    nut_ty2= corner_3d_connector_nut_ty2(type);
-
-    
-
-    nut_profile = [
-        [0, nut_dia/2],
-        [nut_nyloc_thickness-nut_thickness, nut_dia/2],
-        [nut_nyloc_thickness-nut_thickness, nut_ty1/2],
-        [nut_nyloc_thickness-nut_thickness + (nut_ty1-nut_ty2)/2, nut_ty1/2],
-        [nut_nyloc_thickness, nut_ty2/2],
-        [nut_nyloc_thickness, -nut_ty2/2],
-        [nut_nyloc_thickness-nut_thickness + (nut_ty1-nut_ty2)/2, -nut_ty1/2],
-        [nut_nyloc_thickness-nut_thickness, -nut_ty1/2],
-        [nut_nyloc_thickness-nut_thickness, -nut_dia/2],
-        [0, -nut_dia/2]
-    ];
-
-    grub_screw = corner_3d_connector_nut_screw(type);
-
-    outer_side_length = corner_3d_connector_outer_side_length(type);
-    outer_height = corner_3d_connector_outer_height(type);
-    inner_side_length= corner_3d_connector_inner_side_length(type);
-    inner_height = corner_3d_connector_inner_height(type);
-    inner_offset_z = outer_height-inner_height+0.01;
-    
-    //position the nuts on the base
-    positions_horizontal = [
-        [outer_side_length/2,0.001,0,0,270,90],
-        [outer_side_length-0.001,outer_side_length/2,0, 0,270,180]
-    ];
-    positions_vertical = [
-        [0,outer_side_length/2,inner_offset_z,0,0,0],
-        [outer_side_length/2,outer_side_length,inner_offset_z,0,0,270],
-    ];
-    
-    //the radius of the base corners
-    r=1;
-    
-    //offset so everything is centered for easy attachment to extrusion
-    translate([-outer_side_length/2,-outer_side_length/2, -outer_height]){
-
-        color("silver")
-        union() {
-            //create the base
-            difference () {
-                rounded_cube_xy([outer_side_length, outer_side_length, outer_height], r=r);
-                translate([(outer_side_length-inner_side_length)/2,(outer_side_length-inner_side_length)/2,inner_offset_z])
-                rounded_cube_xy([inner_side_length, inner_side_length, inner_height], r=r);
-            }
-
-            for (pos = positions_horizontal) {
-                translate([pos[0],pos[1],pos[2]])
-                rotate([pos[3],pos[4],pos[5]])
-                difference() {
-                    linear_extrude(nut_sx, convexity =3 )
-                    polygon(nut_profile);
-                    //create the screw holes
-                    for ( dist = corner_3d_connector_nut_screws_hor(type) ){
-                        translate([-0.01,0,nut_sx*dist])
-                        rotate([0,90,0])
-                        difference() {
-                            cylinder(h = nut_nyloc_thickness+0.02, d=nut_screw_dia, center = false);
-                            if(show_threads ) {
-                                female_metric_thread(nut_screw_dia, metric_coarse_pitch(nut_screw_dia), nut_nyloc_thickness, center = false);
-                            }
-
-
-                        }
-                        if(grub_screws) {
-                            screw(grub_screw, nut_nyloc_thickness);
-                        }
-                    }
-                }
-            }
-            for (pos = positions_vertical) {
-                translate([pos[0],pos[1],pos[2]])
-                rotate([pos[3],pos[4],pos[5]]){
-                    difference() {
-                        linear_extrude(nut_sx, convexity =3)
-                        polygon(nut_profile);
-                        //create the screw holes
-                        for ( dist = corner_3d_connector_nut_screws_ver(type) ){
-                            translate([-0.01,0,nut_sx*dist])
-                            rotate([0,90,0])
-                            difference() {
-                                cylinder(h = nut_nyloc_thickness+0.02, d=nut_screw_dia, center = false);
-                                if(show_threads ) {
-                                    female_metric_thread(nut_screw_dia, metric_coarse_pitch(nut_screw_dia), nut_nyloc_thickness, center = false);
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        }
-
-        if(grub_screws) {
-            for (pos = positions_horizontal) {
-                translate([pos[0],pos[1],pos[2]])
-                rotate([pos[3],pos[4],pos[5]]){
-                    for ( dist = corner_3d_connector_nut_screws_hor(type) ){
-                        translate([-0.01,0,nut_sx*dist])
-                        rotate([180,90,0])
-
-                        screw(grub_screw, nut_nyloc_thickness);
-                    }
-                }
-            }
-            for (pos = positions_vertical) {
-                translate([pos[0],pos[1],pos[2]])
-                rotate([pos[3],pos[4],pos[5]]){
-                    for ( dist = corner_3d_connector_nut_screws_ver(type) ){
-                        translate([-0.01,0,nut_sx*dist])
-                        rotate([180,90,0])
-                        screw(grub_screw, nut_nyloc_thickness);
-                    }
-                }
-            }
-        }
-    }
-}

vitamins/corner_3d_connectors.scad

@@ -1,33 +0,0 @@
-//
-// NopSCADlib Copyright Chris Palmer 2021
-// nop.head@gmail.com
-// hydraraptor.blogspot.com
-//
-// This file is part of NopSCADlib.
-//
-// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
-// GNU General Public License as published by the Free Software Foundation, either version 3 of
-// the License, or (at your option) any later version.
-//
-// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
-// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-// See the GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License along with NopSCADlib.
-// If not, see <https://www.gnu.org/licenses/>.
-//
-include <../core.scad>
-include <screws.scad>
-
-
-
-//sh is horizontal positions of the screw holes, expressed in %/100 of the nut arm
-//sv is vertical positions of the screw holes, expressed in %/100 of the nut arm
-//                                                                              screw               nd   nt  nnt nsx  nty1 nty2   sh     sv
-corner_3d_connector_2020 = ["corner_3d_connector_2020", 20,    5,   13,     2.5,    M4_grub_screw,  6,  3.5,5,  15.5,10,    6,   [0.5], [0.5]];
-corner_3d_connector_3030 = ["corner_3d_connector_3030", 29.6,6.2,   22,     2.5,    M6_grub_screw,  8,  4.2,6.2,24.9,16,    11,   [0.25,0.75], [0.65]];
-corner_3d_connector_4040 = ["corner_3d_connector_4040", 40,9.5,     25,     2.5,    M6_grub_screw,  8,  5,  9.5,34.0,19.5,  14,   [0.25,0.75], [0.65]];
-
-corner_3d_connectors = [corner_3d_connector_2020,corner_3d_connector_3030,corner_3d_connector_4040];
-
-use <corner_3d_connector.scad>

vitamins/extrusion_bracket.scad

@@ -20,6 +20,8 @@
 //! Brackets for joining extrusions at a corner.
 
 include <../core.scad>
+include <../utils/thread.scad>
+
 use <extrusion.scad>
 
 function extrusion_inner_corner_bracket_size(type) = type[1]; //! Size of inner bracket
@@ -62,14 +64,13 @@ module extrusion_inner_corner_bracket(type, grub_screws = true, backwards = fals
           cube([size.z, tab[1], topTabOffset]);
         }
       }
-            if(grub_screws)
+      if (grub_screws)
         not_on_bom() no_explode() {
             screw_len = screw_shorter_than(depth);
             gap = depth - screw_len;
             screw_z = offset - gap;
 
-                    rotate([0, -90, 180])
+            rotate([0, -90, 180]) if (backwards)
-                        if(backwards)
               translate([size.x - screw_offsets.x, 0, -offset2 + gap])
                 vflip()
                   screw(screw, screw_len);
@@ -123,9 +124,9 @@ module extrusion_corner_bracket(type) { //! Corner bracket for extrusion
         base();
 
     sideThickness = extrusion_corner_bracket_side_thickness(type);
-        for(z = [-eSize / 2, eSize / 2 - sideThickness]) {
+    for (z = [-eSize / 2, eSize / 2 - sideThickness]) {
       translate_z(z) {
-                right_triangle(cbSize, cbSize, sideThickness, center = false);
+        right_triangle(cbSize, cbSize, sideThickness, center=false);
         cube([5, cbSize, sideThickness]);
         cube([cbSize, 5, sideThickness]);
       }
@@ -133,8 +134,9 @@ module extrusion_corner_bracket(type) { //! Corner bracket for extrusion
   }
 }
 
-module extrusion_corner_bracket_hole_positions(type) { //! Place children at hole positions
+module extrusion_corner_bracket_hole_positions(type) {
-    for(angle = [ [0, 90, 0], [-90, -90, 0] ])
+  //! Place children at hole positions
+  for (angle = [[0, 90, 0], [-90, -90, 0]])
     rotate(angle)
       translate([0, extrusion_corner_bracket_hole_offset(type), extrusion_corner_bracket_base_thickness(type)])
         children();
@@ -154,17 +156,165 @@ module extrusion_corner_bracket_assembly(type, part_thickness = undef, screw_typ
   nut_washer_thickness = nut_washer_type ? washer_thickness(nut_washer_type) : 0;
 
   nut_offset = extrusion_corner_bracket_base_thickness(type) + thickness;
-    screw_length = depth ? screw_shorter_than(extrusion_corner_bracket_base_thickness(type) + screw_washer_thickness + depth)
+  screw_length =
+    depth ? screw_shorter_than(extrusion_corner_bracket_base_thickness(type) + screw_washer_thickness + depth)
     : screw_longer_than(nut_offset + screw_washer_thickness + nut_washer_thickness + nut_thickness(nut));
 
   extrusion_corner_bracket_hole_positions(type) {
     screw_and_washer(screw, screw_length);
     translate_z(-nut_offset)
-            vflip()
+      vflip() if (nut_washer_type)
-                if(nut_washer_type)
         nut_and_washer(nut);
       else
         rotate(90)
           sliding_t_nut(nut);
   }
 }
+
+function extrusion_corner_bracket_3D_outer_side_length(type) = type[1]; //! The length of the base cuboid sides
+function extrusion_corner_bracket_3D_outer_height(type) = type[2]; //! The height of the cuboid
+function extrusion_corner_bracket_3D_inner_side_length(type) = type[3]; //! The length of the dip in the cuboid sides
+function extrusion_corner_bracket_3D_inner_height(type) = type[4]; //! The depth offset of the dip in the cuboid
+
+function extrusion_corner_bracket_3D_nut_screw(type) = type[5]; //! The screw (most likely Mx_grub_screw from <NopSCADlib/vitamins/screws.scad>)
+function extrusion_corner_bracket_3D_nut_dia(type) = type[6]; //! The width of bottom part of the nut
+function extrusion_corner_bracket_3D_nut_thickness(type) = type[7]; //! The thickness of the top part of the nut
+function extrusion_corner_bracket_3D_nut_nyloc_thickness(type) = type[8]; //! The total thickness of the nut
+function extrusion_corner_bracket_3D_nut_sx(type) = type[9]; //! The length of the nuts
+function extrusion_corner_bracket_3D_nut_ty1(type) = type[10]; //! The total width of the nut
+function extrusion_corner_bracket_3D_nut_ty2(type) = type[11]; //! The width of the top edge of the nut
+function extrusion_corner_bracket_3D_nut_screws_hor(type) = type[12]; //! The positions of the screw holes on the horizontal arms, expressed in %/100 of the nut arm
+function extrusion_corner_bracket_3D_nut_screws_ver(type) = type[13]; //! The positions of the screw holes on the vertical arms, expressed in %/100 of the nut arm
+
+function extrusion_corner_bracket_3D_get_y_offset(type) = [0, -extrusion_corner_bracket_3D_outer_side_length(type) / 2, extrusion_corner_bracket_3D_nut_nyloc_thickness(type)]; //! helper function to position the y beam
+function extrusion_corner_bracket_3D_get_y_rot(type) = [90, 0, 0]; //! helper function to rotate the y beam
+function extrusion_corner_bracket_3D_get_x_offset(type) = [extrusion_corner_bracket_3D_outer_side_length(type) / 2, 0, extrusion_corner_bracket_3D_nut_nyloc_thickness(type)]; //! helper function to position the x beam
+function extrusion_corner_bracket_3D_get_x_rot(type) = [0, 90, 0]; //! helper function to rotate the y beam
+
+module extrusion_corner_bracket_3D(type, grub_screws = true) {  //! draw the specified extrusion_corner_bracket_3D
+    vitamin(str("extrusion_corner_bracket_3D(", type[0], "): Extrusion corner bracket 3D mm for ", extrusion_corner_bracket_extrusion(type)[0]));
+
+
+  nut_screw_dia = screw_radius(extrusion_corner_bracket_3D_nut_screw(type) * 2);
+  nut_dia = extrusion_corner_bracket_3D_nut_dia(type);
+  nut_thickness = extrusion_corner_bracket_3D_nut_thickness(type);
+  nut_nyloc_thickness = extrusion_corner_bracket_3D_nut_nyloc_thickness(type);
+  nut_sx = extrusion_corner_bracket_3D_nut_sx(type);
+  nut_ty1 = extrusion_corner_bracket_3D_nut_ty1(type);
+  nut_ty2 = extrusion_corner_bracket_3D_nut_ty2(type);
+
+  nut_profile = [
+    [0, nut_dia / 2],
+    [nut_nyloc_thickness - nut_thickness, nut_dia / 2],
+    [nut_nyloc_thickness - nut_thickness, nut_ty1 / 2],
+    [nut_nyloc_thickness - nut_thickness + (nut_ty1 - nut_ty2) / 2, nut_ty1 / 2],
+    [nut_nyloc_thickness, nut_ty2 / 2],
+    [nut_nyloc_thickness, -nut_ty2 / 2],
+    [nut_nyloc_thickness - nut_thickness + (nut_ty1 - nut_ty2) / 2, -nut_ty1 / 2],
+    [nut_nyloc_thickness - nut_thickness, -nut_ty1 / 2],
+    [nut_nyloc_thickness - nut_thickness, -nut_dia / 2],
+    [0, -nut_dia / 2],
+  ];
+
+  grub_screw = extrusion_corner_bracket_3D_nut_screw(type);
+
+  outer_side_length = extrusion_corner_bracket_3D_outer_side_length(type);
+  outer_height = extrusion_corner_bracket_3D_outer_height(type);
+  inner_side_length = extrusion_corner_bracket_3D_inner_side_length(type);
+  inner_height = extrusion_corner_bracket_3D_inner_height(type);
+  inner_offset_z = outer_height - inner_height + 0.01;
+
+  //position the nuts on the base
+  positions_horizontal = [
+    [outer_side_length / 2, 0.001, 0, 0, 270, 90],
+    [outer_side_length - 0.001, outer_side_length / 2, 0, 0, 270, 180],
+  ];
+  positions_vertical = [
+    [0, outer_side_length / 2, inner_offset_z, 0, 0, 0],
+    [outer_side_length / 2, outer_side_length, inner_offset_z, 0, 0, 270],
+  ];
+
+  //the radius of the base corners
+  r = 1;
+
+  //offset so everything is centered for easy attachment to extrusion
+  translate([-outer_side_length / 2, -outer_side_length / 2, -outer_height]) {
+
+    color("silver")
+      union() {
+        //create the base
+        difference() {
+          rounded_cube_xy([outer_side_length, outer_side_length, outer_height], r=r);
+          translate([(outer_side_length - inner_side_length) / 2, (outer_side_length - inner_side_length) / 2, inner_offset_z])
+            rounded_cube_xy([inner_side_length, inner_side_length, inner_height], r=r);
+        }
+
+        for (pos = positions_horizontal) {
+          translate([pos[0], pos[1], pos[2]])
+            rotate([pos[3], pos[4], pos[5]])
+              difference() {
+                linear_extrude(nut_sx, convexity=3)
+                  polygon(nut_profile);
+                //create the screw holes
+                for (dist = extrusion_corner_bracket_3D_nut_screws_hor(type)) {
+                  translate([-0.01, 0, nut_sx * dist])
+                    rotate([0, 90, 0])
+                      difference() {
+                        cylinder(h=nut_nyloc_thickness + 0.02, d=nut_screw_dia, center=false);
+                        if (show_threads) {
+                          female_metric_thread(nut_screw_dia, metric_coarse_pitch(nut_screw_dia), nut_nyloc_thickness, center=false);
+                        }
+                      }
+                  if (grub_screws) {
+                    screw(grub_screw, nut_nyloc_thickness);
+                  }
+                }
+              }
+        }
+        for (pos = positions_vertical) {
+          translate([pos[0], pos[1], pos[2]])
+            rotate([pos[3], pos[4], pos[5]]) {
+              difference() {
+                linear_extrude(nut_sx, convexity=3)
+                  polygon(nut_profile);
+                //create the screw holes
+                for (dist = extrusion_corner_bracket_3D_nut_screws_ver(type)) {
+                  translate([-0.01, 0, nut_sx * dist])
+                    rotate([0, 90, 0])
+                      difference() {
+                        cylinder(h=nut_nyloc_thickness + 0.02, d=nut_screw_dia, center=false);
+                        if (show_threads) {
+                          female_metric_thread(nut_screw_dia, metric_coarse_pitch(nut_screw_dia), nut_nyloc_thickness, center=false);
+                        }
+                      }
+                }
+              }
+            }
+        }
+      }
+
+    if (grub_screws) {
+      for (pos = positions_horizontal) {
+        translate([pos[0], pos[1], pos[2]])
+          rotate([pos[3], pos[4], pos[5]]) {
+            for (dist = extrusion_corner_bracket_3D_nut_screws_hor(type)) {
+              translate([-0.01, 0, nut_sx * dist])
+                rotate([180, 90, 0])
+
+                  screw(grub_screw, nut_nyloc_thickness);
+            }
+          }
+      }
+      for (pos = positions_vertical) {
+        translate([pos[0], pos[1], pos[2]])
+          rotate([pos[3], pos[4], pos[5]]) {
+            for (dist = extrusion_corner_bracket_3D_nut_screws_ver(type)) {
+              translate([-0.01, 0, nut_sx * dist])
+                rotate([180, 90, 0])
+                  screw(grub_screw, nut_nyloc_thickness);
+            }
+          }
+      }
+    }
+  }
+}

vitamins/extrusion_brackets.scad

@@ -19,12 +19,22 @@
 //
 // Extrusion brackets
 //
+include <../core.scad>
+include <screws.scad>
 
-E20_inner_corner_bracket  = [ "E20_inner_corner_bracket", [26, 25, 4.7], M4_sliding_t_nut, E2020t, [7,   6]];
+E20_inner_corner_bracket = ["E20_inner_corner_bracket", [26, 25, 4.7], M4_sliding_t_nut, E2020t, [7, 6]];
-E40_inner_corner_bracket  = [ "E40_inner_corner_bracket", [38, 31, 8.5], M6_sliding_t_nut, E4040t, [13, 10]];
+E40_inner_corner_bracket = ["E40_inner_corner_bracket", [38, 31, 8.5], M6_sliding_t_nut, E4040t, [13, 10]];
 
-E20_corner_bracket = [ "E20_corner_bracket", [28, 28, 20], 2, 3, 19.5, M4_sliding_t_nut,      E2020t];
+E20_corner_bracket = ["E20_corner_bracket", [28, 28, 20], 2, 3, 19.5, M4_sliding_t_nut, E2020t];
-E40_corner_bracket = [ "E40_corner_bracket", [40, 40, 35], 2, 3, 19.5, M8_sliding_ball_t_nut, E4040t];
+E40_corner_bracket = ["E40_corner_bracket", [40, 40, 35], 2, 3, 19.5, M8_sliding_ball_t_nut, E4040t];
 
+//sh is horizontal positions of the screw holes, expressed in %/100 of the nut arm
+//sv is vertical positions of the screw holes, expressed in %/100 of the nut arm
+//                                                                              screw               nd   nt  nnt nsx  nty1 nty2   sh     sv
+extrusion_corner_bracket_3D_2020 = ["extrusion_corner_bracket_3D_2020", 20, 5, 13, 2.5, M4_grub_screw, 6, 3.5, 5, 15.5, 10, 6, [0.5], [0.5]];
+extrusion_corner_bracket_3D_3030 = ["extrusion_corner_bracket_3D_3030", 29.6, 6.2, 22, 2.5, M6_grub_screw, 8, 4.2, 6.2, 24.9, 16, 11, [0.25, 0.75], [0.65]];
+extrusion_corner_bracket_3D_4040 = ["extrusion_corner_bracket_3D_4040", 40, 9.5, 25, 2.5, M6_grub_screw, 8, 5, 9.5, 34.0, 19.5, 14, [0.25, 0.75], [0.65]];
+
+extrusion_corner_bracket_3Ds = [extrusion_corner_bracket_3D_2020, extrusion_corner_bracket_3D_3030, extrusion_corner_bracket_3D_4040];
 
 use <extrusion_bracket.scad>