Re: Repairing catalysed lacquer type finishes
From everything I've read here, David's correct - if it's a 2-pack epoxy or urethane coating, it's effectively a fully cured, crosslinked, thermoset polymer - none of the readily available consumer solvents will dissolve it.
At 'best', you might find a solvent that'll 'swell' & partially degrade the coating - leaving what I suspect would be a 'mess', needing even more work to clean up. As a chemist, I'd advise to use a mechanical, abrasive, method here.
Alan
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