It has been a while back, but I've done some small parts in an old electric oven . Pep Boy's used to sell a kit (sans oven). Two things- 1) it ruins the oven (smell) and 2) powdercoating is best done with the part hanging in the air. I never could get away from either a line from the rack or uneven applications from doing parts one side at a time, or screwing up the electrostatic charge. the pwders are a dry type that are "attracted" to the part to be coated. The powders we used were baked on at 275 deg F. The trick, of course, is prep work and getting a good even application of the powder/ electrostatic charge. It's not hard, but is an art/skill/craft.
