Concentric Box Bins

Normally I don't like printing boxes, seems like a waste of resources considering all the **Altoids** tins and cigar boxes out there waiting to be made into enclosures. That's why initially this was a safety cover for an electrical plug, minus any locking mechanism. It was modeled in **BlocksCAD** with a lot of hulls and cylinders.

**OpenSCAD** is not my forte, so I do apologize for the clunky, inelegantly verbose code.