If you are headed to Huntsville, my shop is always open to you too PCP. I was joking about the microwave transformer (MOT). You really need two or more transformers and by the time you cut the secondary windings out, rewrap with 4awg wire, add leads you are better off buying a used unit. Now, you can also make an electromagnet with MOTs. Parrell a couple of MOTs and you hold down some metal (great for face milling metal on a milling machine). I grab every microwave I see on the side of the road.