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Old 03-04-2013, 06:21 PM   #3391
David R
I been called a Nut Job..
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Joined: Oct 2009
Location: In Da Swamps of WNY
Oddometer: 2,536
I have been tig welding for a long time and never got those.

It looks like your tig weld was completed then the spiders stopped by. The first picture also looks like you are using a contaminated tungsten. ONE dunk and it gets changed. If the arc is a different color than usual, replace the tungsten or regrind it.

The first weld could look better in general. It looks to me like the piece was dirty or your filler was or you dunked and kept on going. The second weld looks better.

10Lpm is plenty of flow for carbon steel. I use about 5-7 litres per minute.

1 Lpm = .478 CFH SO 7 lpm is about 15 CFH.

Just my two cents.

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