I'm taking a TIG welding class which is: Watch 4 videos on TIG welding and go to the lab. The instructor comes around from time to time and offers suggestions... no demos, unless maybe you ask.
Doing some lap joints on CS HR 16 gauge plate, 3/32 tungsten,with filler he said 80 amps... I finally found out that it should be 1 amp per .001 thickness. Anyway I kept having trouble at class and since I also have a machine at home I get to practice. I now at home, have it set at 65 amps and using a very sharp tungsten grind I can get some really nice looking welds.
At home I also grind off the mill scale with a flap disk, at class instructor never seemed to indicate cleaning of oil or grinding was needed. I think I read on here or elsewhere this was needed and along with wiping down the welding rod with acetone. Am I right or wrong??
BTW When I was MIG welding aluminum (at home) I used a stainless steel wire brush and acetone to clean off the plate... welds looked very nice.
Comments Please. B.G.