X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=axlepin.scad;h=8b47771c5e47636b98cb2f24258a94a362594d53;hp=d399092012a805d43b764f1a571f3989ea294199;hb=b70c37edceae13b72a096992e36ee8df7248b42a;hpb=6c2b63ebc8dc8f821db907cc4412b2b243163d7a

diff --git a/axlepin.scad b/axlepin.scad
index d399092..8b47771 100644
--- a/axlepin.scad
+++ b/axlepin.scad
@@ -1,16 +1,47 @@
 // -*- C -*-
+//
+// axlepin.scad
+//
+// 3D designs for for securing things on axles
+// Copyright 2012,2016 Ian Jackson
+//
+// This work is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This work is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this work.  If not, see <http://www.gnu.org/licenses/>.
+
+
 
 function AxlePin_holerad() = 2;
+function AxlePin_zoffset(holerad=2, slop=0.5) = (holerad - slop)*0.7;
 
 module AxlePin(axlerad, pinlen, holerad=2, tabthick=5, slop=0.5){
   pinr = holerad - slop;
   intersection(){
-    translate([0, 0, pinr*0.7]) {
+    union(){
       translate([0, -pinlen/2, 0]) rotate([-90,0,0])
 	cylinder(r=pinr, h=pinlen, $fn=10);
       translate([-tabthick, axlerad, -holerad])
 	cube([tabthick*2, holerad*2, holerad*2]);
     }
-    translate([-50,-50,0]) cube([100,100,50]);
+    translate([-50,-50,-AxlePin_zoffset(holerad,slop)])
+      cube([100,100,50]);
+  }
+}
+
+function Washer_thick() = 1.2;
+
+module Washer(axlerad, washerrad, thick=1.2, slop=0.5){
+  difference(){
+    cylinder(h=thick, r=washerrad);
+    translate([0,0,-1]) cylinder(h=thick+2, r=axlerad+slop);
   }
 }