IanOBrien

let me start off with a note to Robert Geers, you aswell as the myth busters are correct. but in your own ways and i must agree with robert however. it is a very dangerous practice striking 2 hammers together yes chips will fly if slightly edgedand yes the chips of metal will fly anywhere they want which is usually in the worst places (your eye) and even with safety glasses on they can make it past and cause serious injury. a former employee of my and long time family friend had a regular practice of striking one claw hammer to another to gouge in removing nails until he had the misfortune to chip one, and ofcoarse the metal sliver went straight in hiw eyes lodged itself beside the pupil and a few days later began really hurting him. afterwards went to see an eye specialist. to make a long story short he lost the us of one eye cause of that and yes he was wearing safety glasses. after that i did my own tests with several hammers and a hilti dx450 ramset, i did a dry strike to the sid and head of several different hammer and NO none of them exploded or shattered however after several hit to one particular hammer seemed to weaken the steel and started to chip away. so maybe it wont happen rite away but it will eventually and thats where the danger stands...

Ian