I have been using a propane torch to heat my jigs for years and then I put them in a toaster oven to cure. This works great! Just watch your lead and you can tell when it is getting too hot. The lead will get shiney looking and then melting will occur! I usually try to keep my jigs out away from the blue flame to get even heat through out the jig! I paint jigs from 1/8 oz to 8 oz this way.