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    Default mig welding issue

    I have been practicing with my new aluminum spool gun and have been haveing a few issues. I am welding 1/8" aluminum with 5356 .030 wire using a millermatic 210. I have it dialed in so that I have a nice spray transfer and the weld is looking nice, once I get going. But the first inch of weld seems to not be hot enough and the weld doesn't melt in very good, once I get going the weld looks nice and then at the end of the weld there seems to be to much heat and the metal melts away. Is this a common problem with mig aluminum on 1/8". Would a bit of preheat on the first inch or so help out for the first part and if I stop for a minute before I reach the end, let it cool some then weld the last bit.
    Last edited by Stomper; 04-27-2013 at 08:07 PM.

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