Build your own Arc Welder!

[chris31]

This got featured on hackaday.com yesterday.

http://www.hackaday.com/2006/09/21/m...en-arc-welder/

[Al Skierkiewicz]

For those of you thinking of trying this at home, be sure to read the entire article. The use of the microwave oven transformers requires rewinding each one. A microwave uses at least 4000 volts to make the magnetron tube function and that voltage may still lurk inside, stored in the capacitor(s). Since a welder uses low voltage, each transformer will need extensive modification and most of the ovens you will find on the trash heap in this country are wired for 120 volts.