I’m just getting started w/ powder coating & my fist project is a trailor hitch. My question is, what is the best way to prevent damaging the finished coat when you have to torque down the nuts & bolts. The only idea I could come up with is to not coat those areas, but it dosen’t seem like the best solution. I would also like to do the swing arms off my motorcycles, but can’t come up with a better solution than leaving bear metal. Any help at all would be appritiated