if its just thin scrap metalscrap metalscrap metalscrap metal, i dont strip it, and just bring it back as insulated. if its a solid then i for sure strip it, but i also have a lot of free time. good luck



also, just an idea i had... i was going to cut ever wire i had in half, strip one half, and bring the other half back as insulated and see what and if there is a difference in profit