Take our experience and learn with it. The best cup for welding aluminum is a standard number 5 with no gas lens. This produces the most concentrated power with minimal etching on the aluminum It also saves argon!
Each Weld Metals Online Aluminum Consumable Kit includes:
(1) 5# standard gas cup
(1) standard collet body for 9 and 20 size torches
(1) Ck Worldwide wedge collet
(1) 3/32" (2.4mm) CK Worldwide LaYZr tungsten
It's the best bang for the buck kit and it's all you need to stack dimes on aluminum!
Recommended gas flow - 10-15 CFH.
DO NOT exceed 15 CFH