I had to fit two push button locks today at my sisters shop as there is a gang of eastern europeans that are going in and creating distractions and then robbing the stock rooms and so I fitted two push button locks on the two stock room doors.
It was at this point that I found my stanley chisel that I had been using a few weeks previous to shear two bolts that were holding the shop sign up. At this point I realised I should not of used the chisel on hardened steel bolts

Does anyone have any recommendations?
Thanks
chez