Re: Only cracking I have done is
A long time ago the team I was in was moved to a new building (by new I mean old but vacant)
Every desk had a metal drawer cabinet by its side but every single one of those cabinets (built like tanks) was locked and we were provided no keys.
I started fiddling with mine and got around the lock by picking the lever system inside it that connected the lock to the locking mechanism of each drawer (it was just accessible from the bottom of the cabinet).
After seeing I'd opened my own cabinet, my boss instructed me to open the rest of the 60+ cabinets. Fun times.