springpad: add protrusion/indicator

1 files changed, 10 insertions, 2 deletions

diff --git a/another.scad b/another.scad
index b1cbdeb..cc3194e 100644
--- a/another.scad
+++ b/another.scad
@@ -395,56 +395,64 @@ module the_extruder(
    difference() {
     translate([0,0,ls_z-ls_h/2-epsilon])
     cylinder(d=gearbox_d,h=ls_h+2*epsilon,$fn=fnd*gearbox_d);
     cylinder(d=pulley_d+pulley_d_clearance,h=body_h+1,$fn=fnd*(pulley_d+pulley_d_clearance));
    }
    // supports
    // TODO: hardcoded stuff below…
    if(false) { // parallel
     for(y=[-gearbox_d:4:gearbox_d])
      translate([0,y-extrusion_width/2,0])
      cube(size=[gearbox_d,extrusion_width,body_h]);
    }else{ // radial
     for(zr=[-65:(65+50)/7:50])
      rotate([0,0,zr]) translate([0,-extrusion_width/2,0])
      cube(size=[gearbox_d,extrusion_width,body_h]);
    }
   }
 
  }//body module
 
  module springpad() {
   smalld=st_screw_d+st_screw_d_tolerance+2*extrusion_width;
   bigd = spring_d+spring_d_clearance/2;
   hf = (bigd-smalld)/2;
+  h = hf*3.5;
   translate([-gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+1,-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])
+    cylinder(d=bigd,h=h-hf,$fn=fnd*bigd);
+    translate([0,0,h])
     sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
+    l = body_h-ls_z;
+    w = st_thinshell;
+    hull() translate([0,-st_thinshell/2,0]) mirror([1,0,0]) {
+     translate([0,0,w])
+     cube(size=[l,st_thinshell,w]);
+     cube(size=[l-w,st_thinshell,2*w]);
+    }
    }
    translate([0,0,-epsilon])
    cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
   }
  }
 
  module knob() {
   ch = knob_indent_d/2;
   translate([0,0,body_h+epsilon]) {
    mirror([0,0,1]) translate([0,0,-epsilon]) {
     difference() {
      cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d);
      translate([0,0,-1]) difference() {
       cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2);
       translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1])
       cube([bore_d+2,bore_d/2,knob_bore_l+4]);
      }
     }
    }
    difference() {
     union() {
      cylinder(d1=gearbox_d-2*ch,d2=gearbox_d,h=ch+epsilon,$fn=fnd*gearbox_d);
      translate([0,0,ch])
      cylinder(d=gearbox_d,h=knob_h-2*ch+epsilon,$fn=fnd*gearbox_d);