refactored files add some new ones

modules/wafer.scad

@@ -0,0 +1,11 @@
+
+
+
+// [TODO] try add the flat edge on to the wafer
+module wafer(d) {
+    color([128/255, 128/255, 128/255]) {
+        translate([0, 0, -1]) {
+            circle(r=d/2);
+        }
+    }
+}