grinding wheel composition?

[SicMonte]

what type of grinding wheel do I need to sharpen tungsten for my tig welder? I just got a new grinder just for this purpose...now I need the correct wheel.

[toxicz28]

Diamond wheel. Don't know where you would get one.

[HsvToolFool]

A bit too late, but I just got one of these...

http://www.htpweld.com/products/tig_accessories/sharpener.htm

http://www.youtube.com/watch?v=0LNo5Ane4wc&fmt=18

Works awesome. Unfortunatly, it costs $200. Worth it to me in saved time and added safety.

[80proZ]

Just an 80 grit flapper wheel will work fine.I personally use a 6" bench top grinder with the tungston in a cordless drill.A $200 tungston sharpener is wasted money in my opinion.

[HarleyR]

I like a belt sander with a cordless drill as well you can get a little enco belt sander for 80 bucks thar runs a 1 inch belt works perfect and you can use it just for tungsten

[astroracer]

I picked up a used 6" bench grinder at a yard sale for 5 bucks. I put new aluminum oxide wheels on it.
I use a 3 dollar 1/4" electric drill (yard sale again) to spin the tungsten...
Works for me...
Mark

[meenaggie]

Look at the figure on page two and notice the tungsten needs to be held pointing into grinding wheel. This is why it makes life much easier to use a drill to slowly spin the tungsten as described by others. (It is easy the hold the tungsten the other direction by hand but you may end up with a more dilute arc.) Also make sure to move the tungsten side to side in order to keep from making a groove in the grinding wheel. Other recommendation if you want get really serious is dedicate a grinding wheel for only tungsten to keep from contaminating it with other metals.

http://www.weldcraft.com/pdf/Tungsten-Electrodes.pdf