cap springpad calculations for longer screws

1 files changed, 3 insertions, 2 deletions

diff --git a/another.scad b/another.scad
index 8ba0d58..6bb0664 100644
--- a/another.scad
+++ b/another.scad
@@ -392,13 +392,13 @@ module the_extruder(
  }
 
  module springpad() {
   smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell;
   bigd = spring_d+spring_d_clearance/2;
   hf = (bigd-smalld)/2;
-  h = max(hf,fsw-st_screw_l+hf);
+  h = max(hf*2,fsw-st_screw_l+hf);
   translate([-gearbox_d/2+fsw-h,-longwing,filament_elevation])
   rotate([0,90,0]) difference() {
    union() {
     cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd);
     translate([0,0,hf-epsilon])
     cylinder(d=bigd,h=h-hf,$fn=fnd*bigd);
@@ -410,13 +410,14 @@ module the_extruder(
      translate([0,0,w])
      cube(size=[l,st_split_w,w]);
      cube(size=[l-w,st_split_w,2*w]);
     }
    }
    translate([0,0,-epsilon])
-   cylinder(d=st_screw_d+st_screw_d_tolerance,h=st_screw_l-fsw+h+2*epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
+   cylinder(d=st_screw_d+st_screw_d_tolerance,
+    h=min(st_screw_l,fsw-hf)-fsw+h+2*epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
   }
  }
 
  module knob() {
   ch = knob_indent_d/2;
   knob_bore_l = body_h-protrusion_h-pulley_elevation-pulley_h-knob_v_clearance;