Hey guys New to the forums, not so good at intro's. I've been welding for many years, working in the aerospace sector for awhile and now at a shop doing some stainless (round) tube work for the semi conductor industry, along with stainless and duplex pipe for the water RO industry. 99.5% of our wor...

Thank you all so much! I'm heading out to the shop now to get some practice in! Thank you all again! I'll post pics soon! Let's see some updated pics, as Steve said a 1/16" 2% thoriated tungsten will handle up to 150 amps, if you're welding a lot near the upper limit (of a 1/16" tung) the...

Steve I'm surprised you didn't mention me after he made the shot in the foot reference!!! I've also found that welding a small section from just inside the corner to the edge first, on both edges helps as well. It's not necessarily the most aesthetic way to do it, but you can do it before you get a...

mcostello wrote:Could a purge be made with exhaust gas? The other end might not be open or accessible , exhaust wold keep out most of the oxygen. Just askin.........

No the gas(in this case argon) needs to be inert, meaning it won't react with the molten metal

Anyone on here got some good resources or information regarding Sheet Metal welding? Specifically 18 guage stainless MIG or TIG for industrial ductwork. Perhaps if you could be more specific about the info you're looking for...sounds like maybe you want to know the settings for 18 ga stainless with...

Blaze659 wrote:Thanks fellas! Would the 309 require purging to stay strong or would it be fine without for standard exhaust pipe?

The ideal way would be to purge if you can, make sure the joint is free of all contaminates (ID and OD), clean back a good 3/8" from the joint.

Hey guys New to the forums, not so good at intro's. I've been welding for many years, working in the aerospace sector for awhile and now at a shop doing some stainless (round) tube work for the semi conductor industry, along with stainless and duplex pipe for the water RO industry. 99.5% of our work...