IMG_1128.JPG I did this practice piece... I feel I still have heat affected zone but I did this at 45 amps, because at 40 amps it takes forever to get any puddle unless the arc length is about .001" or something. I guess this is what we're aiming for right? I'm still having problems with right...

So passivating is essentially applying a DC current to an acidic mixture and putting one electrode in the acidic mix and clamp the piece. Or do what I did and have a clamp and a copper or metal wand which is soldered onto the other polarity, put a green scotchbrite on it and dip IT in acid and then...

Yea I seen some TIG welders that have the passivating function. How do you passivate it? Do I dip it in hydrochloric acid? The passivating function seems to use some kind of a chemical and the machine applies a current or something.

I’m beginning to understand why vast majority of stainless fixtures are tacked on. It’s so much easier to tack stainless and get a colorless weld. I never realized it’s ok to have it blue and sandblast it later. Probably a lot of exhausts are done this way or they backpurge everything.

Rule of thumb is cup size x2 equals gas flow. #12 cup = 25 CFH (you'll have to do the liters per conversion. Back purge always helps eliminate the sugaring. Blue is fine. Gold is better. Promptly after welding, take a clean stainless brush and scrub the weld. They will return to shiny silver. If yo...

I tried 15 liters per minute, welds are looking better, however I tried 40 amps without pulsing, and it takes forever for a puddle to form. Honestly I feel like I can go lower because I'm using gas like crazy... But I am still having trouble with the weld being all blue, and not the beautiful welds ...

How much argon are you flowing? With a #12 cup, you need to be pushing up near 25-30 CFH. Once you put 2 tacks down, the material is hot enough that 60 amps is probably too high, or very near too high. Stainless tends to warp no matter the thickness. You could try using some chill blocks behind (th...

IMG_1104.JPG I have been practicing welding stainless. I am doing 2mm thick stainless and my trouble is that the thing will always warp, and other than tacks, it never comes out looking good. I mean the weld is strong but I can't help but feel I won't be passing any tests... I'm using Andeli CT-520...