In Reply to: Unwelding JB-weld posted by Zeke (OR) on December 02, 2020 at 13:16:01:
Sometimes the simplest solutions are the most obvious. I'm not saying this will work or not, but I've had stuff like PB Blaster dissolve things, some unintentionally, and plain old gasoline will dissolve many substances too - look at paint. Take a Styrofoam cup and pour a tad of gas in it. Careful to stand out of the way as it will disintegrate the cup on impact. If you prepped/mixed the JB correctly with substance and catalyst hardener, it wasn't anything you did. Sometimes plain Superglue will work too.