Having spent 17 years as a Jet mechanic I've learned a few tricks to loosen frozen bolts and screws. Spiral screw extractors with the correct size drills help. Impact drivers and cordless drills with masonry settings do too. Heat from a small butane torch can assist as well as using valve grinding compound with a new screwdriver bit and pressure. However when dealing with rusted parts I use this..... Go to the pharmacy and order some "wintergreen oil" (methyl sylicate is the chemical name although my spelling may be wrong) You will notice it smells like liquid wrench or Ben Gay. But does it work! pour a little on and wait a few. We use this to disassemble jet engines for overhaul. After about 5 minutes try again. I have used this to pull apart the suspension from a car that was from the northeast. I won a case of beer in that bet. An important note : THIS STUFF WILL CATCH FIRE EASILY! DO NOT SMOKE OR USE A TORCH! I hope this helps someone out there.
This tip courtesy of Peter Vanderpoel (MRA #1136)
