HarmlessJohnny5 said:
HUH, nice, tell us more about this gun, method of use, durability of your finished product (compared to a 400 dollar pro job), etc. I'm interested in poudercoating and got the 1200 F with ceramic (you gotta bake it, but the min baking temp is pretty low, I'll just run the engine I guess....??). But a gun and kit might be a little more effective than a key and a spray can from autozone

so give us info and pics (or do it, then give us info and pics

)
Sorry, I didn't realize someone had asked questions. I just saw the thread again...I know its been awhile but here's a reply.
Gun: $69.99 at Harbor Freight. Works great for a hobby gun though I wouldn't run a business around it. I bought the lifetime warranty($12) and have had the gun replaced twice since 2001.
Method of use: prep, shoot, cure. Takes no longer then painting.
Durability: Resists chips, scratches, chemicals etc better then paint. I know when I'm working on the engine, I'll put stuff on the valve cover all the time. Drag a socket/ratchet across, drop a screwdriver on it, bang into with a breaker bar etc etc.
The two things that's going to keep most people from doing this:
(A.) you need a dedicated oven...not your kitchen oven. The fumes are toxic and once they get in there, its not safe for cooking anymore.
(B.) you need a compressed air source. Nothing drastic, a small compressor will work.
On a side note, once you have a compressor and start using an air ratchet, you'll wonder how you ever lived without it.
Anyway, here's a couple pics of things I've done: