Epoxy Resin Removal

acetone or heat (probably best to avoid both!)

Oh dear. Epoxy is famous for chemical inertness. You might try a heat gun. It can soften it making it peel-able. Ultimately it makes it brittle and maybe a chisel would then work...

Acetone would have removed it before it set, now it can only be removed mechanically ie. Sawing, filing and abrasion.

Angle grinder.

N.

If they are steel then a soak strong in strong caustic soda is effective on most thermosetting polymers. Also on aluminium. I once worked in a paint factory and in the lab we had big tank of caustic soda. One of the managers surrepticiously snuck a dirty frying-pan in from home.

The handle came up spotless and shiny. The pan itself didn't come up at all.

For thermoplastics an organic solvent is probably more effective but likely to be flammable. The one we used in the lab was methyl-ethyl ketone. More effective than acetone and not quite as likely to burn the house down.

Thank you for restoring my faith in this newsgroup.

They sound like just the sort of chemicals that should be used to dilute the methyl methacrylate in those tanks in Garden Grove, California. Erme - but not while I'm anywhere nearby, okay?

Nick

Surely caustic soda will attack aluminium?

I rescued myself from a glob of stray, set, epoxy by dribbling boiling water on it until it went soft enough togently scrape away. Might work on that, too.