First off hello to everyone. Im new, and Ive been following this forum for quite a while, but first time posting. This is where I got my inspiration to build my own oven!! Anyway so here’s my deal:

I am in the process of putting together a 3′X4′X7′ oven for atv and bike frames and maybe an occasional rear end diff. So of course I have a few questions…first off I am using 3 5/8" metal studs for the frame work and for the most part I have most of the walls done. I know where to get most of my supplies (McMaster, Ebay,..ect) from. My question is since this oven will have a rough volume of 84 cubic ft, and from the excel spreadsheet I calculated that I would need about 13500 watts and 4 3300watt burners to achieve decent heat up. Is this correct? If so I have an adaquete power supply in my garage to use a 70amp breaker for an oven of this power requirement. That was supposed to be more of a question….Another question is that if I use these metal studs (25ga Lowes) how much weight can they support? I mean if I needed to hang somethign heavy in there like and engine block or a rear diff, do I need to make some other kinda steel tube support or something??

Can anyone possibly walk me through of what I’d need exactly or at least tell me if Im missing anythign:

PID
Elements
SSR or Contactor
High temp wire
insulation (mineral wool)
Thermocouple

Im sure I’ll have more questions as I go along, such as exact wiring but Im more in the begining stages and want to know if I am on the right track before I get to far ahead of myself…any help is much appreciated.