1 files changed, 15 insertions, 1 deletions

diff --git a/another.scad b/another.scad
index 23243d9..4a9fc01 100644
--- a/another.scad
+++ b/another.scad
@@ -48,4 +48,5 @@ module the_extruder(
  pf_shell = max(3*layer_height,3*extrusion_width),
  pf_smooth = true,
+         pf_guidelen = 3,                       // the length of ptfe guide before pushfit
 
  // empty spaces
@@ -317,5 +318,18 @@ module the_extruder(
    rotate([0,0,180]) {
     pushfit(pf);
-    mirror([0,1,0]) teardrop(d=filament_guide_d,h=gearbox_d,center=true);
+    mirror([0,0,1]) {
+     translate([0,0,-epsilon])
+     teardrop(d=filament_guide_d,h=pf_guidelen+epsilon,angle=225);
+     nl = 3.5; /* TODO: */
+     translate([0,0,pf_guidelen-1])
+     teardrop(d=filament_path_d,h=nl+2,angle=-225);
+     fh = (filament_guide_d-filament_path_d)/2;
+     union() {
+      translate([0,0,pf_guidelen+nl])
+      cylinder(d1=filament_path_d,d2=filament_guide_d,h=fh,$fn=fnd*filament_guide_d);
+      translate([0,0,pf_guidelen+nl+fh-epsilon])
+      teardrop(d=filament_guide_d,h=gearbox_d/2,angle=225);
+     }
+    }
    }//rotate translate rotate translate rotate translate
    // pulley