Thanks for the hint Mark! I will try to hang around a bit more and see if I can get something more appropriate, or maybe some diode bridge or rheostat that can turn down voltage out of this big cabinet that gives 100 A @ 24 V DC.
Or probably I will more easily go with batteries, and maybe set up an alternator led by an electric engine that keeps the charge? I guess there are many ways, the point is choosing the easiest and cheapest one
Anyway, I think the biggest things I'm gonna chrome (guess Copy Chrome will be mandatory, having read the current required for regular chrome!
) will be motorbike exhausts (average 60-80 cm long pipe, 10 cm diameter = ~25x4 inches), or, if I will ever set up something bigger, old cars bumpers...
Please let me know if you think I'd better go with batteries connected in parallel, as I can get 12 V car batteries for free at a junkyard's...
See yaaa