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Spool Gun Handheld Wirefeed Welder Powered by Car Batteries

Step 6Always HOT!!

Always HOT!!
Once you've hooked the welder up to the batteries, it's HOT!!
The trigger only controls the wire feed. The tip is wired direct to the battery.

I started out welding with the tip bare, but I accidentally brushed it against the work and pitted the gun. They make insulated "cups" to cover the tip, but I don't have one. So I proceeded to the next step.
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1 comment
Jul 3, 2009. 4:30 PMdodgedartgt says:
Tim, I enjoyed reading through your welding tutorials, thnx. This one in particular has intrigued me. As for the tip always being "hot", I think there is an easy way to resolve that issue. At the junkyard, grab a starter relay (I think the Ford style double post would be ideal) and use the roller feed power to energize the tip when the trigger is pulled. Just an idea I thought I'd share. Mike Bynum

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Author:TimAnderson
Tim Anderson is the author of the "Heirloom Technology" column in Make Magazine. He is co-founder of www.zcorp.com, manufacturers of "3D Printer" output devices. His detailed drawings of traditional ...
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