keep in mind too if you do use a home oven (definitly not recamended ) it better be an electric one. even though some of the bigger professional ovens are heated by gas or even propane, there set up as to not cause a flash fire, your home gas oven would work, but is it really worth the risk ??? and if youve coated enough, youd know not to cook anything in a oven that has been used for coating, i dont care how many times you clean it. keep in mind oven cleaners wont remove the powder that has fallen from the part and baked onto the interior of the oven, and every time you heat it up, it will still smell of the fumes. the only right way to clean powder from an oven is to burn it off and most home ovens dont get that hot.
theres enough guys on this site that do home powder coating the correct way and they dont charge that much.