make offset on idler and pulley side difference

idler is moving and as long as I'm using plain bearing for idler
that should be better

1 files changed, 11 insertions, 6 deletions

diff --git a/another.scad b/another.scad
index a93d21a..50b3a84 100644
--- a/another.scad
+++ b/another.scad
@@ -66,16 +66,17 @@ module the_extruder(
  left=false,
  vitamins = true,
  supports = false, bridges = true,
  tensioner = true,
  debug = false
 ) {
  fnd = 2*PI; fnr = 2*fnd;
 
+ idler_filament_offset = filament_path_d/2; // -filament_offset;
  lever_shell = mount_screwhead_h+0.5;
  lever_thickness=max(spring_d+spring_d_clearance+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell);
  lsd = idler_d-idler_clearance*2;
  longwing=gearbox_d/2+spring_d/2+lsd/2;
  h_ = (pulley_d+idler_d)/(2*sqrt(2));
  ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) );
  spring_dl = idler_travel*longwing/ri;
 
@@ -117,22 +118,26 @@ 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_screw_d,h=lever_thickness+2,center=true,$fn=30);
      }//place idler
      // filament path
-     rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0]) {
-      rotate([90,0,0]) cylinder(d=filament_d,h=gearbox_d*2,center=true,$fn=15);
-      rotate([-90,0,0])
+     rotate([0,0,45]) {
+      translate([pulley_d/2-idler_filament_offset,0,0]) rotate([90,0,0]) {
+       cylinder(d=filament_d,h=gearbox_d,center=false,$fn=15);
+      }//rotate translate
+      translate([pulley_d/2+filament_offset,0,0]) rotate([-90,0,0]) {
+       cylinder(d=filament_d,h=gearbox_d,center=false,$fn=15);
       translate([0,0,mount_d/sqrt(2)/2+mount_screw_d])
       pushfit(pf);
-     }
+      }//rotate translate
+     }//rotate
     }//translate teeth
    }//translate pulley
   }//translate protrusion
  }//vitamins
 
  module lever() {
   translate([0,0,protrusion_h+pulley_elevation+teeth_elevation]) {
    difference() {
@@ -148,22 +153,22 @@ module the_extruder(
       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/2+filament_offset,0,0]) rotate([90,0,0]) {
+     translate([-idler_d/2-idler_filament_offset,0,0]) rotate([90,0,0]) {
       cylinder(d=filament_path_d,h=3*gearbox_d,center=true,$fn=30);
       translate([0,-filament_path_d/2/sqrt(2),0]) rotate([0,0,45])
       cube(size=[filament_path_d/2,filament_path_d/2,3*gearbox_d],center=true);
      }//rotate translate
-     translate([-idler_d/2+filament_offset,0,0])
+     translate([-idler_d/2-idler_filament_offset,0,0])
      rotate([90,0,0])
      translate([0,0,
       sqrt(2)*(mount_d-pulley_d+lsd)/2
      ]) {
       cylinder(d1=filament_path_d,d2=2*filament_path_d,
                h=filament_path_d,$fn=2*filament_path_d*fnd);
       translate([0,0,filament_path_d-epsilon])
       cylinder(d=2*filament_path_d,h=lsd,$fn=2*filament_path_d*fnd);