chiark / gitweb /
filamentspool uses DoveClipPairBase
[reprap-play.git] / filamentspool.scad
index eb4ee6d..7c2434e 100644 (file)
@@ -3,24 +3,46 @@ slop=0.5;
 
 prongthick=5;
 prongwidth=5;
-ratchetstep=10;
+ratchetstep=15;
 ratchettooth=3;
 ratchettoothheight=5;
+ratchettoothsmoothr=1;
+ratchettoothslope=0.75;
 overlap=0.5;
 
 armendwallthick=2.5;
 armendbasethick=1.2;
 
-module ArmEnd(length=100){
+include <doveclip.scad>
+
+module ArmEnd(length=120){
   channelwidth = prongthick + slop;
   channeldepth = prongwidth + ratchettoothheight;
   totalwidth = armendwallthick*2 + channelwidth;
   totalheight = channeldepth + armendbasethick;
-  difference(){
-    translate([0, -armendwallthick, -armendbasethick])
-      cube([ratchetstep+overlap, totalwidth, totalheight]);
-    translate([-1, 0, 0])
-      cube([ratchetstep+overlap+2, channelwidth, channeldepth+1]);
+
+  translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
+    rotate([0,0,-90])
+      DoveClipPairBase(h=totalheight);
+  }
+
+  for (dx = [0 : ratchetstep : length]) translate([dx,0,0]) {
+    difference(){
+      translate([0, -armendwallthick, -armendbasethick])
+       cube([ratchetstep+overlap, totalwidth, totalheight]);
+      translate([-1, 0, 0])
+       cube([ratchetstep+overlap+2, channelwidth, channeldepth+1]);
+    }
+    translate([ratchettoothsmoothr+0.5, armendwallthick/2, 0]) minkowski(){
+      rotate([90,0,0])
+       cylinder($fn=20, r=ratchettoothsmoothr, h=armendwallthick);
+      multmatrix([     [       1, 0, ratchettoothslope, 0      ],
+                       [       0,      1,      0,      0       ],
+                       [       0,      0,      1,      0       ],
+                       [       0,      0,      0,      1       ]])
+       cube([ratchettooth - ratchettoothsmoothr*2,
+             channelwidth, ratchettoothheight]);
+    }
   }
 }