introduce idler screw dimensions

which are, in fact, idler screw hole dimensions…

1 files changed, 6 insertions, 4 deletions

diff --git a/another.scad b/another.scad
index 03f3bf9..dbd20f3 100644
--- a/another.scad
+++ b/another.scad
@@ -36,12 +36,14 @@ module the_extruder(
  st_screw_d = 5,
  st_thickshell = 8*extrusion_width, st_thinshell = 4*extrusion_width,
 
  // screw it
  mount_screw_d = 3.1, mount_screw_l = 20,
  mount_screwhead_d=6, mount_screwhead_h=3,
+ idler_screw_d = 3,
+ idler_screwhead_d=6, idler_screwhead_h=3,
 
  pf = pushfit_embeddest,
 
  // empty spaces
          idler_travel = 3,                      // how far should idler travel when pressed
  idler_clearance=1,
@@ -110,13 +112,13 @@ module the_extruder(
    }
    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,$fn=30);
+      cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$fn=30);
      }//place idler
      // filament path
      rotate([0,0,45]) translate([(pulley_d-filament_path_d)/2,0,0]) {
       rotate([90,0,0]) cylinder(d=filament_d,h=gearbox_d*2,center=true,$fn=15);
       rotate([-90,0,0])
       translate([0,0,mount_d/sqrt(2)/2+mount_screw_d])
@@ -157,15 +159,15 @@ module the_extruder(
      difference() {
       cylinder(d=idler_d+idler_clearance*2,h=idler_h+idler_v_tolerance,center=true,$fn=60);
       if(supports) for(y=[-lsd/2+extrusion_width:(lsd-2*extrusion_width)/3:lsd/2-extrusion_width])
        translate([-lsd/2-1,y-extrusion_width/2,-idler_h/2-idler_v_tolerance/2-1])
        cube(size=[lsd+2,extrusion_width,idler_h+idler_v_tolerance+2]);
      }
-     cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=30);
-     translate([0,0,lever_thickness/2-mount_screwhead_h]) 
-     cylinder(d=mount_screwhead_d,h=mount_screwhead_h+1,$fn=fnd*mount_screwhead_d);
+     cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$fn=30);
+     translate([0,0,lever_thickness/2-idler_screwhead_h])
+     cylinder(d=idler_screwhead_d,h=idler_screwhead_h+1,$fn=fnd*idler_screwhead_d);
     }
     // mounting screw hole
     translate([mount_d/2,0,0])
     cylinder(d=mount_screw_d+mount_screw_d_tolerance,h=lever_thickness+2,center=true,$fn=fnd*mount_screw_d);
     
     // lever end