Teaching a friend a crash half day course for tig welding square tubing so he could weld a chair project out of square tubing
Getting full and uniform penetration on 11 ga carbon can be a challenge.
Sometimes requires a bevel and 2 passes
In this video...Tips for Walking the Cup welding a Stainless Steel flange to Carbon Pipe
this video shows hot pass, fill, and cap on carbon pipe welded to a stainless flange...not walking the cup