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Thread: Big tungsten downside?

  1. #1
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    Big tungsten downside?

    I usually use 3/32 for about everything... but recently had to weld some heavy stuff and swapped to 1/8"

    gotta say, I like it.

    been too lazy to swap it out and it seems to work fine for .125 also...


    What is the lowest amps I can use with 1/8" tungsten ?

    any downside?


    I understand a tungsten size too small for the amps... but what about bigger?
    .
    Last edited by John T; 01-02-2019 at 09:31 PM.
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  2. #2
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    Re: Big tungsten downside?

    It will work all the way down to under 1 amp. Zap can prove it with the pop can he welded

    Only down side is if u get it too low on amps for to long the weld could blow apart so be careful
    Last edited by motolife313; 01-02-2019 at 10:46 PM.

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    Re: Big tungsten downside?

    1/8 is pretty much all I use, makes it easy when I have to order more. I have switched over to the Diamond Ground Products tri mix for almost everything now, they have an awesome Wolfram Alustar for aluminum if you have a transformer machine. I have smaller sizes if I need to get in tight places with lower amps.
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    Re: Big tungsten downside?

    Quote Originally Posted by motolife313 View Post
    It will work all the way down to under 1 amp. Zap can prove it with the pop can he welded

    Only down side is if u get it too low on amps for to long the weld could blow apart so be careful
    Could you elaborate on this please...

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    Re: Big tungsten downside?

    I've done coke cans on 1/8" electrode.
    Downside...cost...wider arc, unless it's a very very fine point and harder starts
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    Re: Big tungsten downside?

    looks like you could run a second pass over the tubing. You’ll get a little more practice in also

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    Re: Big tungsten downside?

    In automated welding at low amps arc wander is a major concern even if ground to a sharp point.

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    Re: Big tungsten downside?

    It costs more, grinding takes a lot more. 3/32 is enough for most jobs, and it is no big thing to switch sizes. I've made my point before that grinding puts a lot of scratches on a tungsten, this makes for erratic arc. An 1/8" tungsten needs longer grind.

    I've heard something about tungsten needing a given level of amp density to get a small predictable arc coming off the point. I've found a big tungsten when at very low amps tends to arc sideways, not off the tip.

    When filling rust holes on some antique automobile lamps, I went down to .045 tungsten with very good control.
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    Re: Big tungsten downside?

    Quote Originally Posted by motolife313 View Post
    looks like you could run a second pass over the tubing. Youíll get a little more practice in also
    Meh... good enough
    Just a quick vice mount from scrap

    Not fancy but it works
    .




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  10. #10
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    Re: Big tungsten downside?

    That’s a nice edge weld John.

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    Re: Big tungsten downside?

    Quote Originally Posted by motolife313 View Post
    Thatís a nice edge weld John.
    Thanks Adrian


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  12. #12
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    Re: Big tungsten downside?

    Quote Originally Posted by Willie B View Post
    I've heard something about tungsten needing a given level of amp density to get a small predictable arc coming off the point. I've found a big tungsten when at very low amps tends to arc sideways, not off the tip.
    That's been my experience with my Sync 250. Most of the time I keep 3/32" tungsten in torch, but if I try to weld with real low amperage, the arc seems to want to wander more.

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    Re: Big tungsten downside?

    No problem Alfonso

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    Re: Big tungsten downside?

    John,
    how did you cut out the fancy base for the mount?
    Thanks

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    Re: Big tungsten downside?

    Quote Originally Posted by solman View Post
    John,
    how did you cut out the fancy base for the mount?
    Thanks




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  16. #16
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    Re: Big tungsten downside?

    Looks nice. Iron butterfly comes to mind for the base!

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