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carbattrerywelder HOW TO   Car battery powered MIG welder

Normally MIG welding requires a big fancy machine, sometimes also with a large tank of pressurized gas. Instructables user TimAnderson managed to hack together a hand-held wirefeed MIG welding gun and a couple car batteries for a more portable effect. He writes:

Here’s my new wire-feed (MIG) welder.
All of it.
They sell these things as accessories for commercial MIG units, but they can also work great on 24 volts from two car batteries.
I have it loaded with .030″ flux-core welding wire.
It cost me less than $100 on ebay.
The “Ready Welder” is a similar commercial product.
WARNING: The tip is electrically on all the time!

becky stern headshot HOW TO   Car battery powered MIG welder

Becky Stern

Becky Stern is director of wearable electronics at Adafruit Industries. Her personal site: sternlab.org


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