WARNING: I run the system on 240 VAC, which is metered by a power controller I built called the "Scariac". It's similar to the idea of a Variac (variable auto-controller), with a few more hazards to be aware of. The Micro-Welder itself does not have an on-off switch, and can pose a fire hazard if plugged directly into a mains power socket. I made this to be used exclusively with the Scariac. (Look for how to build that in another project.) Stick welding, and/or the modification of a Microwave Oven Transformer (M.O.T), can be very dangerous and presents risk of UV radiation, shock hazards, burns, fires, fumes and a multitude of other risks. This project should not be attempted without adult supervision and adequate training. Misuse, or careless use, of tools or projects may result in serious injury. Use of this video content is at your own risk.