initial commit

2020-07-08 12:11:58 -07:00
commit b28f6fb31f
1 changed files with 60 additions and 0 deletions
--- a/test.scad
+++ b/test.scad
@@ -0,0 +1,60 @@
+$fn=90;
+tol=0.25;
+ht=10;
+diam=15;
+
+difference()
+{
+    difference()
+    {
+        rotate_extrude()
+        {
+            difference()
+            {
+                // basic shape
+                square([diam/2-tol,ht]);
+
+                // bottom chamfer
+                polygon([[diam/2-tol,0],[diam/2-tol,.5],[diam/2-0.5-tol,0]]);
+
+                // top chamfer
+                polygon([[diam/2-tol,ht],[diam/2-tol,ht-.5],[diam/2-0.5-tol,ht]]);
+
+                // retention ring
+                polygon([[diam/2-tol,ht/2+1+tol],[diam/2-tol,ht/2+2+tol],[diam/2-tol-1,ht/2+1+tol],[diam/2-tol-1,ht/2-1-tol],[diam/2-tol,ht/2-2-tol],[diam/2-tol,ht/2-1-tol]]);
+
+            }
+        }
+        // label
+        translate([0,0,ht-0.6])
+        linear_extrude(0.6, convexity=10)
+            text(text=str(tol), size=4, halign="center", valign="center");
+    }
+
+    // hole (for rotation with screwdriver bit)
+    cylinder(d=7.8, h=ht-2, $fn=6);
+}
+
+intersection()
+{
+    rotate_extrude()
+    translate([diam/2,0])
+    {
+        difference()
+        {
+            // basic shape
+            square([4,ht]);
+
+            // bottom chamfer
+            polygon([[0,0],[.5,0],[0,.5]]);
+
+            // top chamfer
+            polygon([[0,ht],[.5,ht],[0,ht-.5]]);
+        }
+
+        // retention ring
+        polygon([[0,ht/2+2],[-1,ht/2+1],[-1,ht/2-1],[0,ht/2-2]]);
+    }
+
+    cylinder(d=diam+8, h=ht, $fn=6);
+}