I need to enlarge the front bumper bracket holes on my '36 gmc. None of the drill bits that I have will touch it. I went to the tool shed here in town and asked for a bit that would work, bought it and guess what? wouldn't touch it. I have tried heating the area around the hole and that didn't help.
So what's the trick, my grinding burr's don't seem to work either.
Anybody got any idea's?
