1 files changed, 2 insertions, 0 deletions

diff --git a/another.scad b/another.scad
index 38a9aae..7d2dfb3 100644
--- a/another.scad
+++ b/another.scad
@@ -336,16 +336,18 @@ module the_extruder(
   bigd = spring_d+spring_d_clearance/2;
   hf = (bigd-smalld)/2;
   translate([-gearbox_d/2+st_shell+st_nut_h+st_shell+smalld,-longwing,filament_elevation])
   rotate([0,90,0]) difference() {
    union() {
     cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd);
     translate([0,0,hf-epsilon])
     cylinder(d=bigd,h=hf*2,$fn=fnd*bigd);
+    translate([0,0,3*hf])
+    sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
    }
    translate([0,0,-epsilon])
    cylinder(d=st_screw_d,h=2*hf+epsilon,$fn=fnd*st_screw_d);
   }
  }
 
  module knob() {
   ch = knob_indent_d/2;