torch mate . cnc and cheap usually are not used in the same sentence.

you can weld aluminum with a dc tig ?

new job different people and they think there way is the only way to do some thing asked the boss if I could weld with the any wire I wanted he said no that lincoln 71m duel shield fcaw has more tinsel strength than Lincoln super arc L56 gmaw . I thought they where both 70,000 psi tinsel strength?

thank you for you're comments . I was talking with a coworker about multi pass mig vertical up verses fcaw . he made the statement that there is no way to make clean multi pass gmaw weld said you would trap silica in the wagon tracks or the under cut that you get when you weld vert up. I called B.S....

there are situations where this will not work it is not a fix all .

backwards is just that the end cap facing forward &the tungsten over the back of you're hand. granted it is easer with a mig gun place it in you're hand so the trigger is facing you're palm . try it .

tip if you hold the tig torch or mig gun backwards you don't get youre left & right mixed up in the mirror.

I have a question on how thick of plate can be welded bare wire like er 70 S not dual shield & we are talking x-ray quality & is there a AWS spec or code on how thick can be welded ?