1 files changed, 17 insertions, 5 deletions

diff --git a/another.scad b/another.scad
index 7e8a45f..342d70c 100644
--- a/another.scad
+++ b/another.scad
@@ -120,69 +120,81 @@ module the_extruder(
      }//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,$fn=30);
-     translate([0,-filament_path_d/2/sqrt(2),0]) rotate([0,0,45])
-     cube(size=[filament_path_d/2,filament_path_d/2,3*gearbox_d],center=true);
-    }
+    place_idler() {
+     translate([-(idler_d+filament_path_d)/2,0,0]) rotate([90,0,0]) {
+      cylinder(d=filament_path_d,h=3*gearbox_d,center=true,$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);
+     }//rotate translate
+     translate([-(idler_d+filament_path_d)/2,0,0])
+     rotate([90,0,0])
+     translate([0,0,
+      sqrt(2)*(mount_d-pulley_d+filament_path_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);
+     }
+    }//place_idler
     
     // idler space and mounting hole
     place_idler() {
      difference() {
       cylinder(d=idler_d+idler_clearance*2,h=idler_h+idler_v_tolerance,center=true,$fn=60);
       if(supports) for(y=[-lsd/2+extrusion_width:(lsd-2*extrusion_width)/3:lsd/2-extrusion_width])
        translate([-lsd/2-1,y-extrusion_width/2,-idler_h/2-idler_v_tolerance/2-1])
        cube(size=[lsd+2,extrusion_width,idler_h+idler_v_tolerance+2]);
      }
      cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$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])