Rewound a microwave oven transformer using 1 gauge welding wire. Before saturation it puts out 1.8volts ish. I plan to use it to heat up a tungsten boat for thermal evaporation deposition. I may rewind it with slightly thinner wire so I can get more turns on the secondary and a little higher voltage. Last picture is a new/old Lindberg 1″ dia. tube furnace I got, goes up to 1400c which is crazy. I use it for diffusion of N type and P type dopants into my homemade semiconductors as well as thermal oxidation. I have a large nitrogen tank which allows me to create a nitrogen atmosphere in it during diffusion and when I want to facilitate SiO2 growth I pump steam through the furnace and turn the nitrogen flow off. I have a mass flow controller for the nitrogen but haven’t hooked it up yet.