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Scratch Start on steel

Posted: Sun Feb 28, 2010 10:15 pm
by Dr Evil
Hi folks. :D Today was a nice day, so I spend some time in the old garage. I thought I would fire up the old welder and play. I have never had success scratch starting without doing some damage to my tungsten tip. Can someone advise on scratch starting on steel? I don't have a foot option on my welder for starting.

Thanks


Machine is a Powcon

Re: Scratch Start on steel

Posted: Mon Mar 01, 2010 8:52 am
by jpence38
Try using a small piece of copper to start your arc on instead of your work piece.

Re: Scratch Start on steel

Posted: Mon Mar 01, 2010 11:24 pm
by brian
Hold your tungsten about 1/8" off the work with the cup resting on the work. Drag your filler across the work and tungsten to close the circuit for a split second which will establish an arc.

Re: Scratch Start on steel

Posted: Tue Mar 02, 2010 12:52 pm
by Dr Evil
Well, here is the issue. I am using a standard welding helmet. I know, I know. Autoshade is
the way to go. :lol: I am really picky. :mrgreen: I don't like the green that is displayed via the autoshade hoods. I wish the mfgs could make an autoshade with no green in it.

Besides that, I tried copper. Of course this was 1 scratch, and I got the copper on the tip. Back to grinding.

I tried my friends Miller syncrowave and at least I could run a beed. (First time welding on aluminum) I think I need to move much faster or turn the heat down something to that effect.

Anyway, I will try the cup on the table and use the filler rod trick.

BTW, is it possible to not scratch start on DC?? can one use a hand or foot puddle to start the arc?? :?:

Thanks

Re: Scratch Start on steel

Posted: Wed Mar 03, 2010 3:40 am
by jtybt
If you have high frequency you can start an arc without touching the work piece.

Re: Scratch Start on steel

Posted: Wed Mar 31, 2010 1:11 am
by pro mod steve
No offense meant what so ever but as a NOOB I have found (and been told by my teachers every day) SPEED KILLS.