I was interested in doing the same and was all resolved to purchase some powdercoating stuff off Ebay USA to give it a try (but home reno's have taken priority
). The prices are cheap enough and there is plenty of gear and info in the way of CD's etc.
I have heard of people (on other forums etc) using all types of ovens and heating elements, and apparently getting good results. Even metal Brownbuilt cabinets and hair dryers
.