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
@@ -18,48 +18,50 @@ module the_extruder(
  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
  // spring properties
          spring_d = 10, spring_lc = 9.6,        // spring diameter and compressed length
  // filament path properties
  filament_d = 1.75,
  filament_path_d = 2,
          filament_guide_d = 4,                  // PTFE filament guide diameter
  // knob properties
  knob_h = 10,
  knob_bore_l = 4,
  knob_indent_d = 4,
  knob_indents = 12,
  // spring tensioner
  st_nut_d = 9, st_nut_h = 4,
  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,
  pulley_clearance=2,
          lever_v_clearance=.7,                  // vertical clearance for the lever
  spring_d_clearance=1,
          protrusion_tolerance_h=.5,             // horizontal tolerance for the motor protrusion
          protrusion_tolerance_v=.5,             // vertical tolerance for the motor protrusion
  mount_screw_d_tolerance=.4,
  idler_v_tolerance=.5,
  knob_bore_d_tolerance=.6,
  st_nut_h_tolerance=.2,
  st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */
 
  what="lever",  // lever|body|knob|springpad|*
  left=false,
  vitamins = true,
  supports = false, bridges = true,
  tensioner = true,
  debug = false
 ) {
@@ -92,98 +94,98 @@ module the_extruder(
    rr = depth+hh;
    translate([0,0,hh]) sphere(r=rr,$fn=fnr*rr);
   }else if(r) {
    hh=sqrt(pow(r,2)-pow(d,2)/4);
    translate([0,0,hh]) sphere(r=r,$fn=fnr*r);
   }
  }
 
  % 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,$fn=30);
   translate([0,0,protrusion_h]) {
    difference() {
     cylinder(d=bore_d,h=bore_l,$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,$fn=30);
+      cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$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])
       pushfit(pf);
      }
     }//translate teeth
    }//translate pulley
   }//translate protrusion
  }//vitamins
 
  module lever() {
   translate([0,0,protrusion_h+pulley_elevation+teeth_elevation]) {
    difference() {
     union() {
      hull() {
       place_idler()
       cylinder(d=lsd,h=lever_thickness,center=true,$fn=60);
       translate([mount_d/2,0,0])
       cylinder(d=lsd,h=lever_thickness,center=true,$fn=60);
      }//hull
      hull() {
       translate([mount_d/2,0,0])
       cylinder(d=lsd,h=lever_thickness,center=true,$fn=60);
       translate([mount_d/2,-longwing,0]) rotate([0,90,0])
       cylinder(d=lever_thickness,h=lsd,center=true,$fn=60);
      }//hull
     }//union
  
     // filament path
     place_idler() translate([-(idler_d+filament_path_d)/2,0,0]) rotate([90,0,0]) {
      cylinder(d=filament_path_d,h=3*gearbox_d,center=true,$fn=30);
      translate([0,-filament_path_d/2/sqrt(2),0]) rotate([0,0,45])
      cube(size=[filament_path_d/2,filament_path_d/2,3*gearbox_d],center=true);
     }
     
     // idler space and mounting hole
     place_idler() {
      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
     translate([mount_d/2,0,0]) rotate([0,90,0]) {
      translate([0,-longwing,lsd/2]) finger_indent(d=lever_thickness-1,r=15);
      translate([0,-longwing,0])
      mirror([0,0,1])
      difference() {
       cylinder(d=spring_d+spring_d_clearance,h=lsd,$fn=fnd*(spring_d+spring_d_clearance));
       sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
      }
     }//rotate-translate
    }//difference
    // bridging patch
    if(bridges) place_idler()
    translate([0,0,lever_thickness/2-mount_screwhead_h])
    mirror([0,0,1])
    cylinder(d=mount_screwhead_d,h=layer_height);
   }//translate
  }//lever module