Posted by Puddles on August 28, 2012 at 08:44:53 from (126.96.36.199):
In Reply to: Welding aluminum posted by Jim in N.M. on August 28, 2012 at 08:07:50:
In most cases you can get by with the average Mig welder. You'll need U-groove drive rolls for the size aluminum wire you want to run. And a nylon liner in your Mig gun. Shorter the gun the better. And if you can do it, place the feeder above the work. Let gravity help you. If by chance your Mig welder will accept a spool gun that would be the way to go, or a push pull gun. You will need 100% argon gas.
To help things out, preheat the first couple inches of the weld zone. See how these two welds are cold for the first couple inches? (Right side).
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