Thread: Purging primary's before TIG welding.

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tube looks ok inside with tig with or with out filler rod i try allways keep a very tight fit up... light tight .two things to do watch heat . if tube is closed up some guy drill a 1/8 hole by the weld then fill it this some times it help let out and burnt gas keeps the weld from pitting when your allmost welded up wipe all tube clean i use lacquer thinner ..clean no oils on rust no scale do not use brake clean it can make you very sick or just plain kill you.. OH i have two bottles as well my bottles are only for pure argon do not think about welding with a Co2 mig mix only argon or helium or a mix of the two