What Jason said is true...
However, to address the question more directly, a dedicated wheel is worth it but it doesn't have to be a full size grinding wheel. I use a 1" diameter stone wheel for my die grinder.
The important thing is to grind the tungsten in the correct direction. The grind marks should be parallel to the center line of the material. I hold the tungsten with the point toward the top of the wheel (although I have seen other people hold the point down). If the grind marks are perpendicular to the center line of the tungsten that can cause issues with the arc stability.
There are chemical sharpening options too but I have not used those too much. Actually I have only used that type of deal once at the welding shop when i was demoing a Miller Diversion. I found the chemical tough to control the shape and size of the sharpening. maybe with a little practice it would get easier but I like grinding.
Hope this helps!
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Last edited by ccm399; 11-15-2011 at 04:46 PM.
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