small fish eye inside of purge weld 1.25" pipe .120 wall
by ray
(stockton ca USA)
small fish eye inside of tig purge weld 1.25" pipe .125 wall
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purge might have not been perfect at first and the fish eye might be just deposited island of oxidation
if it is a sure enough crater hole, then exiting the weld too quickly is the likely cause. For that thickness, i am guessing you are only doing a single pass so you are penetrating and need to trail out more gradually before breaking the arc
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