I bought a powder coat gun at Harbor Freight and an oven at the thrift store. Cuts down on the price of powder coating, but it is a slow process done that way. You would be all summer doing 450 traps. I'm probably going to build me a powder coat oven this summer where I can do quite a few at once, after trying it out and deciding I liked it. But again, you have to either remove or neutralize rust before powder coating. I haven't tried it, but I believe you could dye traps with alder bark, walnut hulls, etc and then powder coat over them without problems. Some logwood dye leaves a powdery residue/finish that might cause issues.

I don't think I will ever powder coat most of my traps, I'll stick to dye and wax. But for snow traps I think it is the ticket.