Lots of good advice there. Fox, I'm sure you forgot to mention that your special fine wheel for grinding your TIG tungstens is used for that purpose only. Using it for other purposes will contaminate the tungsten. I myself like a fine needle point on my 2% thoriated tungsten when welding ferrous metal, ground at a taper of about 3 1/2 to 4 times the tungsten diameter. But as soon as that point hits the puddle, it's gone and time for a trip to the grinder. That's why I usually have 4 or 5 tungstens ground and ready to go when I start. It would help to have a very steady hand to keep that tip out of the puddle. A block of copper also works very well for putting the ball on pure tungstens when welding non-ferrous. But I am assuming the trigger guard in question here is steel. Some "aluminum" guards out there are pot metal which can be very difficult or impossible to weld.
