232K views · 6.3K reactions | What is the best cup for TIG welding aluminum? it depends. sometimes gas lens cups work great... other times a standard #5 cup seems to be the best choice. Lets start the conversation today with a video and see where it takes us later on with more specific examples like high amperage and small cups for limited access. I use both gas lens style cups and standard collet body cups depending on what I am welding. | Welding Tips & Tricks | Facebook