bruce991 wrote:Strange I make all kinds of things from old and new shoes never had any problems. I do use 2% lanthenated tungsten and find them very easy to run a nice bead. Maybe you have a leak on the argon. I do use gas lens #8 on everything. I have welded some right out of box no prep no issues.
My experience as well.
No problems - I speed tack with a quick blast of 200 amps.
Tacking is really nice like that because they don't move around that way like they can with a mig or stick tack.
Then I often tig them really fast with high amps too. 1/16" rod in 70s-2 or 309 stainless.
They are new and I don't clean the mill scale off or wire brush them - all welded from the back.