Welding gas?
 

I have a snap-on mm250 welder, its a mig with tig capabilities, I bought the tig kit with it 10 years ago but haven't used it, just used the mig. I want to try the tig but I don't want to have to buy another gas bottle and have to keep switching bottles when switching from mig to tig. is there a gas I can use for both? This will be used for welding steel only as the welder is not ac/dc capable.

Re: Welding gas?
 

Common mixes for mig are c25 or c15, tig on the other hand needs 100% argon. So unfortunately you will need to get a second bottle

Re: Welding gas?
 

I'd ask is can the 100% Argon be used for MIG? My guess is yes, but the cost may be higher.

Re: Welding gas?
 

You could mig weld steel with 100 argon but I don't think it will turn out very well, at least it didn't when I tried it. One possible solution is to have one bottle of 100 argon for tig and then use flux core for mig so no gas is required

Re: Welding gas?
 

Straight Argon for mig welding steel does not work because its to cold
C25 for tig does not work because its to hot.

Re: Welding gas?
 

You will need 2 separate shielding gases for MIG and TIG. I use 75/25 for MIG and pure Argon for TIG.

Re: Welding gas?
 

Unfortunately, you will need two different bottles. Mig needs co2, without it mig gets pretty temperamental. And just try and tig with anything other than 100% argon and that is pretty much a disaster so yea.

Re: Welding gas?
 

Well, at least everyone agrees. Thanks guys!

Re: Welding gas?
 

I live in Houston and Manage 4 Praxair locations here in Houston.
They are correct on the Shielding Gases.
Question is there a local Praxair in your area? If there is send me a private message.

Re: Welding gas?
 

No local Praxair.