1 files changed, 4 insertions, 1 deletions

diff --git a/another.scad b/another.scad
index 4f70a1a..79cebdd 100644
--- a/another.scad
+++ b/another.scad
@@ -82,4 +82,7 @@ module the_extruder(
  lsd = idler_d-idler_clearance*2;
  longwing=gearbox_d/2+spring_d/2+lsd/2;
+ shortwing = let(a=mount_d/2,c=(pulley_d+idler_d)/2/sqrt(2))
+             sqrt(c*c+pow(a-c,2));
+ longwing_travel = idler_travel*longwing/shortwing;
  h_ = (pulley_d+idler_d)/(2*sqrt(2));
  ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) );
@@ -231,5 +234,5 @@ module the_extruder(
     cylinder(d=gearbox_d,h=body_h,$fn=fnd*gearbox_d);
     // finger and spring support
-    fsw = gearbox_d-(gearbox_d-mount_d)/2-spring_lc;
+    fsw = gearbox_d-(gearbox_d-mount_d)/2-max(spring_lc,longwing_travel+(gearbox_d-mount_d)/2);
     translate([-gearbox_d/2,0,0]) difference() {
      union() {