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  1. #11
    Join Date
    Feb 2010
    Location
    YOUNGSTOWN, OHIO
    Posts
    172

    Default

    Quote Originally Posted by Stu Miles View Post
    If machine only does 1/8 inch penetration on aluminum,
    and lets say I am welding 1/4 inch aluminum plate.
    I do one side and flip it over -
    is that doing the same thing as one pass with a machine rated for 1/4 inch alum ?

    Thanks, Stu
    I am curious as to what machine you are thinking gets 1/8 inch penetration on aluminum cause for $1000 you are not going to get a machine that even comes close to that.

    And when the size of a fillet weld is measured, it is measured from the leg to the toe and the effective throat is what actually means anything.

    I think you may be misunderstanding the ratings for these machines. When they say 1/4 inch, that means that is the max. thickness of base metal for a single pass weld.
    Last edited by jpence38; 12-19-2012 at 07:36 AM.
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  2. #12
    Join Date
    Dec 2012
    Posts
    27

    Default Your advice is helping my decision

    Quote Originally Posted by MMW View Post
    What machine are you looking at? If you are looking at a 110 mig for aluminum don't waste your time. If the machine is rated for 1/8" steel it will not do 1/8" aluminum very well. Judging by your $1000 budget you are looking at something bigger?
    The advice here is a big help.
    I'm see I need to spend more for machine that can plug into 220 for better penitration.
    And this characterization makes me understand better -

    "So it's almost like a race where you're "chasing the heat." To weld aluminum, you need a machine with enough power to dump enough heat into the puddle faster than it can "leak out" into the surrounding metal."

    So guess I will save a little more money and go for the passport,
    I'll get a 220 plug into the garage. It's other attributes serve my needs.
    The stuff I want to do is not really weight bearing and will not have much stress on it. Just making armatures out of 1/4 " bar. I'll start on steel but would like to try aluminum at some point.

    Thanks for the help,
    Stu
    Last edited by Stu Miles; 12-19-2012 at 09:24 PM.

  3. #13
    Join Date
    Feb 2012
    Location
    Wa
    Posts
    577

    Default

    If these things are not going to be holding hardly any weight you are over thinking this. You are doing a simple butt joint it sounds like, just bevel the weld surfaces and weld them up. Or just take the parts to a local welder and have them weld the pieces you need, it would not cost much.

  4. #14
    Join Date
    Dec 2012
    Posts
    27

    Default simple butt joint

    Ya I guess that's the thing - I 'm on a forum where most of the folks
    really do welding for specific heavy duty needs.

    My stuff is more hobby related - I attached a photo here of what I am wanting to do - but with aluminum as well as steel.


    They will be simple butt joints with 1/4 inch bar.
    But I do want to get into aluminum at some point.
    If anyone can point me to a tutorial video of a miller passport plus
    doing aluminum would appreciate. Can't find any on you tube.

    Thanks, Stu
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