TIG welding sheetmetal

[Sandbagger]

After some reading last night ...
I have been grinding the tungsten incorrectly .
Right on the machine it says 20g -difficult ,and a guy at the welding supply says an Econotig only goes down to 20 amps and I would have a tough time .
I have welded 1/8 inch plate with this machine ,just having a tough time on 18-20 -22 guage
I am useing the rod & tungsten you suggested .Metal is clean and no gap .
Check the gas flow And try again today . It has to be something simple Im doing wrong ...
Thanks ...

[parsonsj]

Regarding the OP and fellow using high heat and welding fast to minimize heat, I think that's usually a better way to weld. I don't know about 140A on 16g sheetmetal, but I use about 60A+ when I'm welding SS tube on headers and exhaust.

I've found that I get a better weld, with more penetration when I used torch movement to control heat along with amperage. I think that's true in general, and I've been making a real effort to increase my travel speed along with higher amperage.

Like others have said, there are probably lots of "correct" ways to weld.

[68protouring454]

on anything 20 ga and thinner i use .040 tungsten, with .035 filler.
20 ga to 16 ga i can use 1/16th and .045 er70 filler. generally 40-60 amps on a miller 250 syncrowave

[GregWeld]

BTW -- Proper "fit up" means -- You should not be able to fit your filler in the gaps -- and tighter fit up than that would be even better.

[Sandbagger]

Had some success today , Thanks .
Gringing the Tungsten was most of the problem , new regulator too .
When they say you dont want to go back ti the Mig they aint kidding .
Working on some 32Y body Ford fenders . Most of my parts have zero gap .
1/10 the clean up time compared to Mig

[GregWeld]

GOOD TO HEAR!!

It's fun when it's going "right".