update time
first i tried to strip the finish using nitro mors, dabbed a bit around the area where the backplate goes so if it all went horribly wrong nobody would notice
however, it had no effect on the finish whatsoever, not even one blister
i really wanted to avoid sanding the guitar though, in my opinion for the look i'm going for it would make the lines too straight and perfect, i needed something that would look jagged and worn out
so in steps the heat gun a 450C (no idea what that is in faranheit sorry) one, so nothing too powerful
at that level though the epoxy goes really soft and easy to work with, using a paint stripper it came off really easily
example
it left the odd mark here and there from where i put a bit too much force into the stripper, but it's being relic'd, so i could probably pass that off as wear and tear
the next step was to mark up the areas i want to keep with a dry wipe marker pen, the kind they use on whiteboards in school. This stuff wipes off really easily, so there's no worries about marking the finish, and it means i dont have to refer to pictures all the time
you can just about see it on this
i'll post again when there's further work done