On Monday, July 25, 2016 at 11:03:06 AM UTC-7, pyotr filipivich wrote:

It seems to me that one could put the safe on a mill (if
possible), and "mill off" the hinges. Or round and round the door
till it is no longer held in place.

The hinges aren't what secures a safe door, they just keep it from
falling on your toes when you open it. Unlike a front door
(hinges on the right, bolt on the left) a safe door is typically
secured by bolts on top, right, left, bottom. The big lever
retracts LOTS of bolts when the safe is opened.