Most of us, at some point or another, have dealt with the issue of filters that just won’t come off. Perhaps you choose to keep UV filters on your lenses at all times. Perhaps you don’t, but you’ve purchased a used lens that’s come with one. Maybe it’s been a temporary filter like a polariser that just gets stuck. Most of the time, though, they’ll come off with a little effort.
Sometimes, however, they just won’t budge. Even with special filter removing wrenches they just don’t want to come off. You might have to get a little medieval on them. Something Adam Savage has become quite familiar with. In the second such incident with a stuck filter, he tries the filter wrenches with no luck. So, he turns to the power tools.