Posted by JOB on September 01, 2012 at 08:46:24 from (74.36.133.90):
In Reply to: Re: Welding aluminum posted by Stick welding on August 31, 2012 at 07:49:42:
When I start a Tig weld I do not just leave the torch in one place and establish a puddle. I take the torch and move it two to three inches up and down the weld area for a few minuted to pre-heat the base metal then I will go to the spot I want the weld to start and make a puddle, and start the weld.
This crack I mentioned was on a butt weld joint, not a crack that was in the aluminum before I received it. I still feel aluminum welds better if it is hot. A good example is the pictures that puddles posted.
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