I scored another free microwave oven yesterday and later made the second choke needed using the transformer core from it. Today I filled that box with the homemade chokes and a massive bridge rectifier and wired it all with welding cable to some Dinse jacks to bring the connections outside. Made some side cover plates from the microwave oven cover panel and screwed them to the box and the DC box for my Horror Freight welder conversion is a done deal. Tomorrow I'll rewire the welder so that I can plug jumper cables into more Dinse jacks to change between AC and DC welding. I'm gainin' on it.