that controler looks cool.
we went the cheap route:
Got 4 electric ovens from the dump (you get weird looks when you go in with empty truck and come out with stuff :biggrin: ) here they have a section ppl drop off appliences only.
then stripped out the oven heat element and the controls from the ovens
put two sets in the bottom and two sets in the top, cover with sheet metal (so there is no direct heat to damage PC). Then use the controls out of the ovens, spliced a bottom set together with a top set (2 controls used). We used two of the oven controls so that they would be independant to keep a better temp control. This way if one is off +/_ some degrees it would have a redundent control for half the heaters.
for the oven construction:
got sheet metal bent like a "C" and slid high temp foam installation from lowes in it. Riveted all together, high temp silicone for exhaust all seals.
and made a track system so that powder could be shot on a trolly then just rolled in the oven
There is a website that we got the idea from that showed good pics, and we just changed it as to meet his needs. I'll see if I can find that site again, it was a great help.
:beer: