Tag: tungsten contamination
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Gas Lens vs Standard Collet Body
Choosing between a gas lens and a standard collet body affects shielding gas coverage, tungsten access, and how the torch behaves around joints, corners, and root passes. The right choice depends on…
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Lincoln Square Wave 205 TIG Tungsten Contamination Troubleshooting
If the tungsten on a Lincoln Square Wave 205 turns black, balls unevenly, grows a dirty tip, spits into the puddle, or makes the TIG arc wander, stop and correct contamination before…
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How to Fix an Unstable TIG Arc from Poor Tungsten Prep
A wandering TIG arc is often blamed on gas flow, amperage, or the machine. Those issues can matter, but the tungsten electrode is one of the first places to check. A contaminated,…
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Why TIG Tungsten Turns Black Even When the Weld Looks Clean
TIG tungsten turning black is usually a shielding problem, not a mystery tungsten problem. The weld may still look acceptable at first, but a darkened electrode, unstable arc, dull bead edge, or…
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Best TIG Gas Lens Kit for Sooty Welds (Clean Shielding)
Black soot and dirty tungsten usually point back to shielding gas coverage—either turbulence, leaks, or a setup that can’t maintain a stable argon envelope. A gas lens kit is one of the…
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TIG Welds Turning Black and Sooty? Fix Gas Coverage Fast
If your TIG welds are coming out black, sooty, or “dirty,” you’re not alone—this is one of the most common early warning signs of shielding gas problems. It usually shows up mid-bead…
