Build a Portable DC Arc Welder for $20

If you can scrounge an old lawn mower, an automobile alternator, and a 12-volt battery, you can build your own portable DC arc welder.



066 DC Arc Welder - welder in use
A staffer using the portable DC arc welder.
MOTHER EARTH NEWS STAFF
066 DC arc welder - basic setup
The completed portable DC arc welder looked like this.
PHOTO: MOTHER EARTH NEWS STAFF
066 DC arc welder - diagram
Schematic diagram for the DC arc welder.
MOTHER EARTH NEWS STAFF

















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