I've been making jigs for over 8 years now and I agree with the toaster oven. You get a more consistant heating and it's much easier to bake them after the paint is on. Another good thing to get (or make) is a fluid bowl so your paint goes on more evenly. This will stop the clumping you can get from sticking the hot jig head in the paint jar, and you can get more jigs painted per jar of paint.