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Topic Review (Newest First)
01-05-2006 06:52 PM
Travis Rankin exactly,
I allways just put the ground clamp on the steel table, and then everything is grounded.

I've just been using pennies, thats one thing I allways seem to have
01-05-2006 05:28 PM
1931 steve What do you do scratch start on a piece of copper and draw it off the copper onto the metal that is being welded? does the copper need to be grounded also or just lay it on the grounded metal?

Steve
01-05-2006 05:13 PM
Travis Rankin Yes scratch starting is just like Stick.. You should scratch on a piece of copper to start, so you dont contaminate the tungsten.. With foot pedal control it is easy to get used to it with just a small current, then you just push down harder to get the desired welding current..

Yes my welder is scratch start for now..One day soonish I am going to build a high frequency arc starter.. it makes a high voltage high frequency arc that jumps the gap so you dont have to scratch start.. hope that helps
Travis
01-05-2006 04:48 PM
1931 steve
Welding Question?? Scratch Start??

Hi guy's I have been fallowing the DIY Tig welder thread by Travis. I can weld with and own both Stick and Mig, but know nothing about Tig other than what I have read or hear, a good friend states he can weld very well with Tig and thats all he talks about when it comes to welding. (he did this at his work place, time will tell if he's that good. He's not that good with a Mig). But anyway this is my question

What does it mean when you scratch start (with a Tig) the weld? Is it like a stick welder where you kind of scratch to start the arc? or something else? Please explain. And if it is not scratch start what other start are they? Does this Tig machine that Travis is building with all of us use a scratch start or something else? What start method is the best for tig?

As always thanks for the great answers.

Steve

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