I bought a cheap AC/DC TIG welder to learn to TIG weld with and it was going quite well with steel and then aluminium. Then all of a sudden the tungsten refuses to start an arc unless I touch it to the surface of the material I'm welding which of course is no good for aluminium. I know it's a bit of a longshot but is there anything I can start to look at to see what might be causing the problem?
Yes it's a Chinese welder and yes I bought it on Ebay from LTS (I've seen the other thread on here) a couple of years ago.
Yes it's a Chinese welder and yes I bought it on Ebay from LTS (I've seen the other thread on here) a couple of years ago.