CUP SIZE?

Whats the rule of thumb for cup size? Or do you just go with what your good with?

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i can do most every job using a #7 (7/16") gas lens cup.

but on jobs where it doesn't matter, or when I am running low on argon or wanting to save argon gas, I often go as small as a 4 using only 8-10 cfh argon flow rate.

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