Tig cup size question
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  1. #1
    Join Date
    Mar 2018
    Posts
    50

    Tig cup size question

    I'm going to start welding someb1/8 inch steel with a 3/32 tungsten outside if we get a calm day. I wondering what size cup to put on my torch?

    Sent from my SM-N950U using Tapatalk

  2. #2
    Join Date
    Mar 2005
    Location
    Under a Rock
    Posts
    3,612

    Re: Tig cup size question

    I think you will get a lot of different answers... kind of a personal preference.

    I started scratch tig with an Aluma 6 cup then my HTP machine I used their pyrex gas lens which is probably about an 8 cup...

    I recently went back to Aluma cups.... basically because if you break the pyrex, it's about 20 bucks to replace it...
    using a 5 cup now with a gas lens...... less gas is a plus too... and you can get into tighter places...

    Buy a kit with different sizes and see what you prefer.
    Miller 211
    Hypertherm PM 45
    1961 Lincoln Idealarc 250
    HTP 221


    True Wisdom only comes from Pain.


  3. #3
    Join Date
    Mar 2010
    Location
    Delaware
    Posts
    2,595

    Re: Tig cup size question

    Like JohnT said does not matter what size cup you use. The biggest thing is to keep any wind out so it doesn't blow your argon away from the weld pool. Tarps, ply wood, cardboard, whet ever it takes to block any wind.

    Once I had to tig weld some aluminum brackets on an piece of equipment outside in the wind, I got a drop light and hung it over my shoulder for some light and covered me and the work piece up with a big tarp was a pain trying to see were to start the arc but got er done.
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  4. #4
    Join Date
    Nov 2014
    Location
    PDX PNW
    Posts
    6,463

    Re: Tig cup size question

    I like the 5 cup, gives good argon velocity over 8 cup. I run my 5 at about 11 CFh. The 8 requires about 18-20. For our side I’d choose the 5 at about 15-17 cfh

  5. #5
    Join Date
    Jul 2018
    Posts
    54

    Re: Tig cup size question

    Big cup with a big gas lens, and tarps to block any wind. No.8 sounds about right.

  6. #6
    Join Date
    Apr 2018
    Location
    TN
    Posts
    182

    Re: Tig cup size question

    Use a jumbo gas lens and a 10 cup. Plenty of flow, plenty of coverage.
    1957 Lincoln Idealarc 300 AC/DC
    1988 Lincoln 225/125 AC/DC
    2018 Lincoln 180
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    1976 Smith SC209, Sw1 Torches
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  7. #7
    Join Date
    Dec 2010
    Location
    SoCal-LA
    Posts
    8,673

    Re: Tig cup size question

    Quote Originally Posted by Munkul View Post
    Big cup with a big gas lens, and tarps to block any wind. No.8 sounds about right.
    I am in this #8 gas lens camp for outside welding suseptable to wind. Otherwise I should be #6 for inside joints, and #7 for outside joints working in the shop out of the wind.
    Weld like a "WELDOR", not a wel-"DERR"
    MillerDynasty700DX,Dynasty350DX3ea,Dynasty200DX,Th ermalArc400GTSW,LincolnSW2002ea., MillerMatic350P,MillerMatic200withspoolgun,MKCobra Mig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig3ea.

  8. #8
    Join Date
    Feb 2009
    Location
    Chicago
    Posts
    6,137

    Re: Tig cup size question

    gas lens #8 cup on 99% of what i weld
    Torchmate 2x2 CNC with Flashcut CNC controls
    Hypertherm Powermax45
    2015 AHP Tig
    Razorweld 195 Mig
    Razorweld 200ac/dc Tig
    ViperMig 180
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