Originally Posted by madmax718
if you mix up the two, your in for a world of wandering arc.
If you mix what two?
As for sharpening the tungsten the only thing you really need to pay attention too is that the grind marks should be running parallel with length of the tungsten. This will help to focus the arc and help make the point last longer. Most people use bench grinders, I have a coarse and a fine wheel at the shop, use the coarse wheel to rough it out and finish it on the fine wheel. They also make dedicated sharpeners but you dont need one of those.