How to get into a safe without a paperclip

A 90lb SentrySafe can be opened with a circular saw; you just saw it in half. While obviously not as bad as a safe that can be opened by stabbing a paperclip into it, the feat is accomplished quickly, with no skill whatsoever (a Skil is used, mind you) and demostrates that it's just a box made of very thin metal and some heat insulation.