hello...

I am about to buy my first TIG. Unfortunately, due to bad local representation for Miller, it is out of the question due to the price, but I am going for an 160 amp AC/DC TIg which will I hope satisfy my needs... (4130 steel tubing up to 2.5/3mm, SS up to 2.5 mm, aluminium up to 3mm)

Since I have a 200 amp MIG already, I have a bottle filled with Ar/CO2 mix, and I will be getting another one just for Ar. Since I am using relatively small bottles, I would like to use my other bottle (the ar/Co2 mix one) to provide Gas for backpurging when working on SS. so my question is, can I backpurge SS with 75/25 Ar/Co2, or do I have to invest in twin regulators for my Ar bottle and just use that one for SS...? Tig will be connected to Ar only of course..

cheers

vlado

I am about to buy my first TIG. Unfortunately, due to bad local representation for Miller, it is out of the question due to the price, but I am going for an 160 amp AC/DC TIg which will I hope satisfy my needs... (4130 steel tubing up to 2.5/3mm, SS up to 2.5 mm, aluminium up to 3mm)

Since I have a 200 amp MIG already, I have a bottle filled with Ar/CO2 mix, and I will be getting another one just for Ar. Since I am using relatively small bottles, I would like to use my other bottle (the ar/Co2 mix one) to provide Gas for backpurging when working on SS. so my question is, can I backpurge SS with 75/25 Ar/Co2, or do I have to invest in twin regulators for my Ar bottle and just use that one for SS...? Tig will be connected to Ar only of course..

cheers

vlado

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