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Cup Size
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chadmh91
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    Fri May 16, 2014 8:35 pm

How do you know what size cup to use???
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    Sun Sep 22, 2013 10:14 am
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    Minneapolis Mn 55407

I start with a 10 (5/8) gas lense cup and go down in size to fit in tight spaces,extend tungsten to see with out too much back tilt.
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gamble
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    Mon Mar 07, 2011 1:10 pm

Depends on what you are doing.
I do a lot of aluminum so a #8 is enough for me.
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    Thu Dec 26, 2013 12:41 am
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    Laredo, Tx

Yup, depends on what you're doing. Big enough to shield the arc, puddle, and tungsten, but not so big that you're just wasting argon. So what are you doing?
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chadmh91
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    Fri May 16, 2014 8:35 pm

I am welding 2in SCH 80 pipe, what cup should I use??
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noddybrian
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    Thu Jan 24, 2013 12:13 pm

Not often I do this - but I freehand it & find a No.6 is adequate for gas cover on carbon steel ( root run ) - I like the smaller cup for visibility but if you walk the cup it's probably easier with a larger one - say an 8 ( some like larger )- I doubt there is an absolute right & wrong here so it's more personal choice or your welding style as long as you get decent gas cover - if it's Tig all the way you probably want to change to a bigger cup once the root is in - sure others will chime in & I expect in the next segment of Jodies Tig video he'll cover this as he's just done torches.
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TwentyFourSeven
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    Sun Aug 24, 2014 4:41 pm
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    Tarpon Springs FL

I like DD's. :D
Lincoln Precision Tig 225
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    Wed Aug 06, 2014 12:48 am
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    Melbourne, Australia

TwentyFourSeven wrote:I like DD's. :D
I was just waiting for that to pop up!
I wondered how long it would take... :D
EWM Phonenix 355 Pulse MIG set mainly for Aluminum, CIGWeld 300Amp AC/DC TIG, TRANSMIG S3C 300 Amp MIG, etc, etc
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dirtmidget33
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    Tue May 13, 2014 5:22 pm

I hate to admit it with all the tig stuff I collected torches, lens, cups but. . .
17 torch
3/32 gas lens with 2% lanthanited tungsten
#8 cup
Is what I normally use for everything I do for the most part, and could prolly even go down a cup size and would not notice. Just my thoughts.
why use standard nozzles after gas lens where invented. Kinda of like starting fires by rubbing sticks together.
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Rick_H
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    Sat Feb 08, 2014 1:50 pm
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    PA/MD

I also start with a gas lens and a number 8 Cup....I free hand and walk the cup with that size
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
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