From ce6a6be1e9b0a3e9b955fb94111010193efdab8d Mon Sep 17 00:00:00 2001
From: TQ Hirsch <thequux@upstandinghackers.com>
Date: Sun, 24 Apr 2022 23:58:24 +0200
Subject: [PATCH] Updated scad files based on test prints

---
 mechanical/assembly.scad    |  2 ++
 mechanical/constants.scad   |  2 +-
 mechanical/parts.scad       | 11 +++++++----
 mechanical/stock_parts.scad |  2 +-
 mechanical/test_prints.scad | 27 ++++++++++++++++++++++-----
 5 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/mechanical/assembly.scad b/mechanical/assembly.scad
index 5626e58..b58b2e8 100644
--- a/mechanical/assembly.scad
+++ b/mechanical/assembly.scad
@@ -1,3 +1,5 @@
+$fs=0.1;
+
 include <constants.scad>
 include <parts.scad>
 
diff --git a/mechanical/constants.scad b/mechanical/constants.scad
index 78139bd..d4d6e14 100644
--- a/mechanical/constants.scad
+++ b/mechanical/constants.scad
@@ -14,7 +14,7 @@ cur_ypos = 140;
 
 echo(str("Range = ", [ xsize - xmin * 2, ysize - ymin * 2 ]));
 
-//$fn = 30;
+$fn = 30;
 
 screw_hole_expansion = 1.1;
 screw_num_sides = 7;
\ No newline at end of file
diff --git a/mechanical/parts.scad b/mechanical/parts.scad
index 3a7e3ef..026b833 100644
--- a/mechanical/parts.scad
+++ b/mechanical/parts.scad
@@ -409,6 +409,7 @@ module xsled_frame() {
   }
 }
 
+
 gt2_clip_meshing_dist = belt_pitch * 6;
 gt2_clip_peg_diam = 8; // min 6
 gt2_clip_ease_in_diam = 6;
@@ -418,7 +419,9 @@ gt2_clip_gap_diam = gt2_clip_peg_diam + belt_thickness * 2 + 1;
 gt2_clip_thickness = (gt2_clip_peg_diam + gt2_clip_gap_diam)/2;
 gt2_clip_length = gt2_clip_narrowing_dist + gt2_clip_meshing_dist + gt2_clip_peg_diam / 2 + gt2_clip_gap_diam - belt_thickness;
 module gt2_clip_cutout(teeth_inside) {
-  dual_width = belt_thickness * 2 - tooth_height;
+    
+    belt_expansion = 0.5;
+  dual_width = belt_thickness * 2 - tooth_height + belt_expansion;
   loop_peg_diam = gt2_clip_peg_diam; // min 6mm
   gap_diam = gt2_clip_gap_diam;
   narrowing_ease_diam = 6;
@@ -426,7 +429,7 @@ module gt2_clip_cutout(teeth_inside) {
   meshing_dist = gt2_clip_meshing_dist;
   ease_out_rad = gap_diam - belt_thickness ;
 
-  out_off = teeth_inside ? 0 : dual_width - belt_thickness;
+  out_off = teeth_inside ? 0 : dual_width - belt_thickness - belt_expansion;
   translate([
     -(narrowing_dist + meshing_dist + (ease_out_rad - out_off - belt_thickness))
     -(teeth_inside ? tooth_height - belt_pld : belt_backing)
@@ -453,7 +456,7 @@ module gt2_clip_cutout(teeth_inside) {
           [0, 0],
           [meshing_dist - 1, 0],
           [meshing_dist, - out_off],
-          [meshing_dist, - belt_thickness - out_off],
+          [meshing_dist, - belt_thickness - out_off - belt_expansion],
           [meshing_dist - 1, - dual_width],
           [0, - dual_width]
         ]);
@@ -463,7 +466,7 @@ module gt2_clip_cutout(teeth_inside) {
         square(ease_out_rad + 2);
         difference() {
           circle(ease_out_rad - out_off);
-          circle(ease_out_rad - out_off - belt_thickness);
+          circle(ease_out_rad - out_off - belt_thickness - belt_expansion);
         }
       }
     }
diff --git a/mechanical/stock_parts.scad b/mechanical/stock_parts.scad
index 050e399..638ca28 100644
--- a/mechanical/stock_parts.scad
+++ b/mechanical/stock_parts.scad
@@ -27,7 +27,7 @@ module bushing() {
 }
 
 // located with the shaft in +z, face on the XY plane
-module nema17(depth = 23.5) {
+module nema17(depth = 38) {
   bom_item(printable = false, label = "NEMA-17 stepper motor");
   face = 42.3;
   screw_pitch = 31 / 2;
diff --git a/mechanical/test_prints.scad b/mechanical/test_prints.scad
index 1b5597a..8b8bc9a 100644
--- a/mechanical/test_prints.scad
+++ b/mechanical/test_prints.scad
@@ -18,11 +18,28 @@ module bearing_slot() {
 }
 
 let($fn = 30) {
-    translate([-28, 0, frame_size/2])
-    rotate([0,90,0]) bearing_slot();
+    //translate([-28, 0, frame_size/2])
+    //rotate([0,90,0]) bearing_slot();
 
-    translate([28, 0, frame_size/2])
-        rotate([0,-90,0]) bearing_slot();
+    //translate([28, 0, frame_size/2])
+    //    rotate([0,-90,0]) bearing_slot();
 
-    idler_post(10);
+    //idler_post(10);
+
+
+    intersection() {
+        translate([0,0,belt_width/2 + 4])
+        union() {
+            gt2_clip(true);
+            translate([0,-1,0])
+            mirror([0,1,0])
+            gt2_clip(false);
+        }
+        
+        translate([-40, -40, 0])
+        cube([80,80,belt_width + 2]);
+    }
+
+//gt2_clip_cutout(false);    
 }
+