WIP: funnel to catch filament after driving

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
@@ -44,12 +44,13 @@ module the_extruder(
  idler_screw_d = 3,
  idler_screwhead_d=6, idler_screwhead_h=3,
 
  pf = pushfit_embeddest,
  pf_shell = max(3*layer_height,3*extrusion_width),
  pf_smooth = true,
+ pf_guidelen = 3,				// the length of ptfe guide before pushfit
 
  // empty spaces
  idler_travel = 3,				// how far should idler travel when pressed
  idler_clearance=1,
  pulley_d_clearance=2,
  lever_v_clearance=.7,				// vertical clearance for the lever
@@ -313,13 +314,26 @@ module the_extruder(
    translate([0,0,filament_elevation])
    rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0])
    rotate([-90,0,0])
    translate([0,0,mount_d/sqrt(2)/2+mount_screw_d+epsilon])
    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,$fn=fnd*filament_guide_d);
+      translate([0,0,pf_guidelen+nl+fh-epsilon])
+      teardrop(d=filament_guide_d,h=gearbox_d/2,angle=225);
+     }
+    }
    }//rotate translate rotate translate rotate translate
    // pulley
    cylinder(d=pulley_d+pulley_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance));
    // leverspace
    hull() for(x=[0,gearbox_d])
    rotate([0,0,45])