bore shape as it is

1 files changed, 7 insertions, 3 deletions

diff --git a/another.scad b/another.scad
index f78d1b0..d4a3f90 100644
--- a/another.scad
+++ b/another.scad
@@ -16,12 +16,13 @@ module the_extruder(
  // motor properties
  gearbox_d = 36,
  mount_d = 28,					// the distance between opposite mounting holes
  mounthole_depth = 5,
  protrusion_d = 22, protrusion_h = 2.2,		// the dimensions of the protrusion on top of gearbox
  bore_d = 8, bore_l = 17.6,
+ bore_dd = 7,
  // pulley properties
  pulley_d = 11.5, pulley_h=10,
  pulley_elevation = 1,				// pulley elevation above the protrusion
  teeth_elevation = 7.5,				// distance from the bottom of the pulley to its teeth
  // idler properties
  idler_d = 9.5, idler_h = 4, idler_id = 3,	// idler dimensions: outer and inner diameters and height
@@ -75,20 +76,23 @@ module the_extruder(
   }else if(r) {
    hh=sqrt(pow(r,2)-pow(d,2)/4);
    translate([0,0,hh]) sphere(r=r,$fn=2*PI*r);
   }
  }
 
- // vitamins
  % if(vitamins) mirrorleft() {
   translate([0,0,-epsilon]) mirror([0,0,1]) cylinder(d=gearbox_d,h=1,$fn=60);
   for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0])
    cylinder(d=mount_screw_d,h=20,$fn=30);
   translate([0,0,-epsilon]) cylinder(d=protrusion_d,h=protrusion_h,$fn=30);
   translate([0,0,protrusion_h]) {
-   cylinder(d=bore_d,h=bore_l,$fn=30);
+   difference() {
+    cylinder(d=bore_d,h=bore_l,$fn=30);
+    translate([-bore_d/2-1,bore_dd-bore_d/2,-1])
+    cube([bore_d+2,bore_d/2,bore_l+2]);
+   }
    translate([0,0,pulley_elevation]) {
     cylinder(d=pulley_d,h=pulley_h,$fn=30);
     translate([0,0,teeth_elevation]) {
      place_idler() {
       cylinder(d=idler_d,h=idler_h,center=true,$fn=30);
       cylinder(d=idler_id,h=lever_thickness+2,center=true,$fn=30);
@@ -100,13 +104,13 @@ module the_extruder(
       translate([0,0,mount_d/sqrt(2)/2+mount_screw_d])
       pushfit_thread();
      }
     }//translate teeth
    }//translate pulley
   }//translate protrusion
- }// vitamins to let
+ }//vitamins
 
  module lever() {
   translate([0,0,protrusion_h+pulley_elevation+teeth_elevation]) {
    difference() {
     union() {
      hull() {