Local guy wanted too much to powder coat my engine tins, So I built an oven instead Options

[stugray]

I wanted to powder coat the engine tins myself but some of the pieces are pretty large.
And I wanted to be able to do my steelies as well.

So I had a 48"X30"X30" gang box in my backyard taking up space.

I bought a old working electric oven from a local scrapyard for $10 and it worked.
Pulled the guts out of it for the demonstration.

First I built a "core skeleton" to hold the inner box and the coils:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1486343146.1.jpg)

It's useable space will be 18" X 18" X 36".
Then I lined it with aluminum foil and 2X layers of R13 fiberglass with the paper removed.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1486343146.2.jpg)

Then I finished out the box and installed the coils:

(IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1486343146.3.jpg)

Finally I made a hollow metal box for a lid and packed it with more fiberglass and finished:

(IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1486343147.4.jpg)

It works for a couple of first runs, but the heating is way too extreme when the coils turn full on.
I expected this behavior because the oven has almost zero thermal mass inside the oven cavity.
So I will install a thermal shield over the coils out of steel plate (like 3/8" or so).
That should slow the response time of the oven and give a much more control-able temp.

I also ordered some 240V Solid State relays.
I'll stick a raspberry pi to it with a temp sensor and allow it to control the coils with wifi access and control.
I also have a temp datalogging capability I will incorporate.

I will post some pics of doing my engine tins. They are stripped ready for me to decide what color I want to do them in.
I have stock-like Matte Black, Semi-Gloss Black.
I also have clearcoat, and "Black Chrome" which is really just a smoky, highgloss clearcoat.

So I am considering putting that or clear over the stripped clean metal engine tins.
I like the look of the bare metal scrubbed clean.
Even with the imperfections and few bits of rusty patches, it looks kind of "steam-punk" and I might go with it.
I'll post some pics of the tins soon.