On my trailer I've got bolts holding the T+GV wood sides to the frame. The bolts have shallow slots in the domed head. I can't get enough purchase on some of them to get them out. I'm sure I remember something called a reverse tap from when I worked in a tool shop
40 years ago. You drill a pilot hole and you screw this tap in anti- clockwise, so when it stops drilling into the bolt, it starts unscrewing the bolt. Can anyone confirm or give me the correct name for it? Thanks, Pete- posted
15 years ago