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Scratch start TIG Aluminum?

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  • JWDESIGNS
    started a topic Scratch start TIG Aluminum?

    Scratch start TIG Aluminum?

    I've used my TIG setup many times for stainless and mild steels but haven't for aluminum. Anyone else on here do it this way?

  • elvis
    replied
    Still on the coast! I think it was 75 again today? Anyway, I'll swing by this weekend if you are around.

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  • walker
    replied
    Elvis, bring that HF unit in trade for those hemispheres! How was your trip to the coast?

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  • elvis
    replied
    Whoops. I wasn't seriously trying to sell. Just make a point.

    Traumajunkie I pm'd ya.

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  • Miller Welders
    replied
    We ask that no selling or solicitation of equipment or services take place on the forums. Thanks for your cooperation.

    http://www.millerwelds.com/about/terms.html#q

    Miller Welding Forums Administrator

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  • traumajunkie
    replied
    Scratch start TIG Aluminum?

    Elvis, ship it this way and I'll pay pal you...

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  • JWDESIGNS
    replied
    Seems like a pretty good deal, if I wasn't strapped to tight for money right now I'd jump on it... Most of y'all talking about the breeze blowing argon away, I'd be using it mainly in the shop anyway. I was just wondering what I could use on both power sources I already have without buying another machine and still be portable...

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  • elvis
    replied
    Originally posted by JWDESIGNS:316964
    My setup is just a tig torch and hose/regulator... hook direct to power supply... About how much is a HF unit I can run off both my Bobcat 225 and buzz box?
    Ha I'll sell you a 251d HF box for $400. It just sits around... I have seen them sell for 400-700 depending on the sucker. They sell for a lot brand new. I bought one a while back thinking it would be useful. It mostly just takes up space. Might be nice if I had and engine drive, but dealing with shielding gas and a breeze is not what I want to deal with.

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  • H80N
    replied
    Originally posted by walker View Post
    I started out using my ac/dc buzz box with an add on freq box to scratch start a/c aluminum with no pedal. Do yourself a favor and just save your pennies for a real machine.
    I agree..... my first couple of years TIG welding was done that way (1968-70)

    you learn to adapt... but it is a crude and tough way to go..

    the cost of a decent HF-251 HiFreq box will put you most of the way toward the cost of a decent used Sync 250... and halfway to a Dynasty..

    pretty sure you will be happier in the long run...

    even with a HF-251 on the Bobcat... outdoor TIG at the mercy of the breeze to blow your Argon away with no AC balance or 14pin for a pedal is just plain no fun...

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  • JSFAB
    replied
    http://www.millerwelds.com/products/...ies/frequency/

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  • JWDESIGNS
    replied
    My setup is just a tig torch and hose/regulator... hook direct to power supply... About how much is a HF unit I can run off both my Bobcat 225 and buzz box?

    Leave a comment:


  • Meltedmetal
    replied
    I don't know what your TIG setup is but I would guess that most any AC machine with an optional Hi Freq unit could do aluminum. This is what Lincoln used to say about the Idealarc 250 AC/DC :The Idealarc 250 with the optional Hi-Freq is an inexpensive equipment combination for part time production or repair TIG welding of aluminum, magnesium, thin stainless steel and many space-age metals.
    It's not scratch start but it's less investment than a Dynasty if you're just trying it out. Of note Lincoln doesn't seem to still supply their Hi Freq unit any longer but Miller does and there are many available in the used market. I expect the inverters have done away with much of the demand for this type of setup.---Meltedmetal

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  • walker
    replied
    I started out using my ac/dc buzz box with an add on freq box to scratch start a/c aluminum with no pedal. Do yourself a favor and just save your pennies for a real machine.

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  • GTA/SPEC
    replied
    You can lift arc aluminum on AC, if you have a dynasty.

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  • H80N
    replied
    Originally posted by JWDESIGNS View Post
    I always thought you had to have HF too, but I recently saw a forum (which I can't seem to find now) that was talking about it. I can't be for sure but I think they were saying to use Helium for the shielding gas???? Would like to know for sure on gas, tungsten, etc...
    Yes you can...TIG weld Aluminum with DC..... but it is better done on thick sections like plate or castings... and it is a pretty imprecise process... no AC to jiggle the puddle or HF to provide cleaning action..

    and as said you need helium..

    here is an outline

    http://mewelding.com/tig-welding-alu...rode-negative/

    For thin sections and sheet metal... you will still need AC-HF
    Last edited by H80N; 02-05-2014, 02:45 PM.

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