Watch this video and more on WelderSkills
In this video you will see TIG welding aluminum lap joints and comparing Stargon AL, argon/helium, and pure argon.
this video shows hot pass, fill, and cap on carbon pipe welded to a stainless flange...not walking the cup
This video shows tig welding carbon steel coped tubing with settings, gas flow with a 10 cup, and common mistakes
This video shows selecting cup size, walking the cup technique tips and clear arc shots so that you can learn to walk the cup if you are struggling