I had a look using the search function for this but couldn't find much.
I've just bought a hammond enclosure which is powder coated inside and out. I've never come across this before and I was wondering if anyone has any hints/ tips on how to progress. I like to know all the pots etc ground properly to the enclosure, but this stuff looks like it will be incredibly rough to remove.
It's going to be like stripping a Squier poly finish all over again, isn't it :'(
Use your multimeter to see if there's continuity between different parts of the inside. Sometimes the paint is conductive.