Why does this happen?
Kevin explains that his TIG tungsten turned blue because he had it stuck out a little too far. He was trying to weld in a tight corner, so he stuck out the tungsten a little more than usual.
Because the tip was stuck out a little farther, oxygen was getting to it because he hadn’t turned up the gas flow on the flowmeter to protect it.
So if you’re going to stick your tungsten out a little more than usual, turn up your gas flow 1/8 or 1/4 turn, just to compensate for your tungsten sticking out a little more by increasing the gas coverage on the tip.
Now Kevin gets to take the “walk of shame” to the grinder to resharpen the tungsten.
Before he turns on the grinder, you might want to stick around for another moment to see what else you don’t want to see blue ….