Demonstration of an Electro Arc Metal Disintegrator for removing broken tooling without damage to a part. Visit https://www.electroarc.com to find out more information.
I was working at my regular job on location in Maryland when I came across a stripped Allen head bolt. I did not have any new bolts to replace it so I decided to cut a slot in the head of the bolt with a hacksaw blade to allow me to unscrew it with a flat head screw driver. I learned this trick several years ago while working for a drain cleaning/plumbing company and it has come in handy a few times over the years.