Have a fridge i wana make a smoker with... Few of the dents i coudltnt pound out have mastic ureathane body top coat. I was planing on painting it up and using automotive paint to get the color selection i wanted,(1950's cascade green) plus was originaly going to be a garage/mancave cabinet. Now that i wana smoke it out should i worry about the body putty giving me problems etc. I would think auto paint should be good as firewalls etc. Are painted. I want temps up to 350. Should i invest in powdercoat or see what colors highheat engine paint i can get and try too spray that.