Comment on Hackers Are Emptying ATMs with a Single Drilled Hole and $15 Worth of GearparentComments−spyder9yIt's not fast but it's possible to cut steel too with cordless drill: https://www.youtube.com/watch?v=aj12WdVhOCc−hackcasual9yTook him 8 minutes on what's probably mild steel. A high security enclosure might use something like hardened cast vanadium steel with carbide chips. You'll go through a sack of those drill bits even going through half an inch.
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It's not fast but it's possible to cut steel too with cordless drill: https://www.youtube.com/watch?v=aj12WdVhOCc
Took him 8 minutes on what's probably mild steel. A high security enclosure might use something like hardened cast vanadium steel with carbide chips. You'll go through a sack of those drill bits even going through half an inch.