I have a decoy RSC that I keep some low-value items in to hopefully take the brunt of an attack if a thief wants to try his hand at opening a safe... to keep them busy and not focused on where the real valuables lie... that being said, it still contains things of some value, that I occasionally use and I don't want openly accessible etc.
Anyways, the digital lock failed (it's a cheap one) and the backup key was misplaced in a move... and I needed something out of that safe for a Women's Range Day I was hosting at my private range...
I had 1-1/2 hrs before start time of the range day... I pulled it off in 20 minutes.
Had I not cared about completely destroying the RSC I could've done it in less than half the time. But I cared about the items in the safe at least a little bit and I wanted to maintain the integrity of the safe making for an easy repair. I also didn't want to make a massive mess so I was holding a shop-vac hose between my legs to catch most of the metal shavings and gypsum dust.
I removed the digital lock, used a hole-saw to drill an access hole. Then, like an amateur (even though I knew better), I tried drilling the mount-studs for the key lock and then punching it out. I likely did irreparable damage to the key lock (haven't had time to inspect that one yet). That failed so I went to a different approach. I could see where the bolt-mechanism reinforcements were welded onto the inner steel layer of the door, I simply drilled the welds from the back side then I hit the "bolt actuating arm" with a hammer and punch to bend it out of engagement with the lock mechanism. Door handle opened just as smoothly as if I had unlocked it the proper way. To fix I just have to re-weld those welds and spot back in some sheet metal to cover the hole; the digital lock will completely mask the area I attacked. As a matter of fact, with the digital lock put back on the safe there is ZERO visual sign the safe was attacked, not even from the inside. Had it been a smart criminal that did it instead of myself it may have taken me a LONG time to notice it had been compromised.