Decided to start a new thread since other one is kind of long. While at Airgas yesterday, found cool new product that chemically sharpens the tungsten. Looks like a baby food sized jar of sugar-about 8$. What you do is pull the tungsten out a little (maybe an inch out), then hold the tungsten against the ground clamp and step on the pedal. All you are doing is shorting it out so it will glow red. Now let off the pedal and remove from ground clamp. While hot, you just dip the end of the tungsten into the jar of powder, and a reaction takes place that perfectly sharpens the tungsten! No grinder marks whatsoever! No, this is not a prank! All you have to do is maybe wipe some of the residue off the tungsten and you're good to go. Supposed to be good for about 500 sharpenings. Now, I'm not sure if this will work on the square end of a new piece of tungsten-you may have to grind a rough point to help it the first time. Pretty cool! Sorry I don't remember the name though.