add endcap

014-End-Cap/endcap.scad

@@ -0,0 +1,112 @@
+// When a small distance is needed to overlap shapes for boolean cutting, etc.
+epsilon = 0.01;
+
+module bevel(l, w, h){
+   polyhedron(
+           points=[[0,0,0], [l,0,0], [l,w,0], [0,w,0], [0,0,h], [l,0,h]],
+           faces=[[0,1,2,3],[5,4,3,2],[0,4,5,1],[0,3,4],[5,2,1]]
+           );
+}
+
+module shim(l, w, h){
+   polyhedron(
+           points=[[-l/2,-w/2,0], [l/2,-w/2,0], [l/2,w/2,0], [-l/2,w/2,0], [-l/2+w/4,0,h], [l/2-w/4,0,h]],
+           faces=[[0,1,2,3],[5,4,3,2],[0,4,5,1],[0,3,4],[5,2,1]]
+           );
+}
+
+module halfBevel(l, w, h) {
+    bevel(l,h,h);
+    translate([0,w,0])
+        rotate(a = 270)
+            bevel(w,h,h);
+}
+
+module fullBevel(l, w, h, b) {
+    halfBevel(l, w, b);
+    translate([l,w,0])
+    rotate(a = 180)
+        halfBevel(l, w, 1);
+    
+    translate([0,0,h])
+        rotate(a = 90, v = [0, 1, 0])
+            bevel(h,b,b);
+    translate([l,0,h])
+        rotate(a = 90)
+            rotate(a = 90, v = [0, 1, 0])
+                bevel(h,b,b);
+    translate([l,w,h])
+        rotate(a = 180)
+            rotate(a = 90, v = [0, 1, 0])
+                bevel(h,b,b);
+    translate([0,w,h])
+        rotate(a = 270)
+            rotate(a = 90, v = [0, 1, 0])
+                bevel(h,b,b);
+
+}
+
+module tubeBevel(l, w, h, b) {
+    translate([0,0,h])
+        rotate(a = 90, v = [0, 1, 0])
+            bevel(h,b,b);
+    translate([l,0,h])
+        rotate(a = 90)
+            rotate(a = 90, v = [0, 1, 0])
+                bevel(h,b,b);
+    translate([l,w,h])
+        rotate(a = 180)
+            rotate(a = 90, v = [0, 1, 0])
+                bevel(h,b,b);
+    translate([0,w,h])
+        rotate(a = 270)
+            rotate(a = 90, v = [0, 1, 0])
+                bevel(h,b,b);
+}
+
+module beveledCube(l, w, h, b) {
+  difference() {
+      cube([l,w,h]);
+      translate([-epsilon, -epsilon, -epsilon])
+        fullBevel(l + 2 * epsilon, w + 2 * epsilon, h + 2 * epsilon, 1);
+  }
+}
+
+module squareTube(l, w, h, t) {
+   difference() {
+      cube([l,w,h]);
+      translate([t,t,-epsilon])
+         cube([l - 2 * t, w - 2 * t, h + 2 * epsilon]);
+   }
+}
+
+module beveledTube(l, w, h, t, b) {
+    difference() {
+        squareTube(l, w, h, 2);
+        translate([-epsilon,-epsilon,epsilon])
+            tubeBevel(l + 2 * epsilon, w + 2 * epsilon, h + epsilon, b);
+    }
+    translate([t,t,0])
+        tubeBevel(l - 2 * t, w - 2 * t, h, b);
+}
+
+module endCap(cl, cw, ch, tl, tw, th, sl, sw, sh, t, b) {
+    translate([ (cl - tl) / 2, (cw - tw) / 2, 0])
+        beveledTube(tl, tw, th, t, b);
+
+    translate([ 0, 0, -ch ])
+        beveledCube(cl, cw, ch, b);
+    
+    
+    translate([ cl / 2, (cw - tw) / 2, th / 2 ])
+    rotate(a = 90, v = [1, 0, 0])
+        shim(sl, sw, sh);
+    
+    translate([ cl / 2, cw / 2 + tw / 2, th / 2 ])
+        rotate(a = 270, v = [1, 0, 0])
+            shim(sl, sw, sh);
+
+}
+
+endCap(50, 30, 4, 46.5, 27.14, 13, 4, 2, 0.5, 2, 1);
+