Thanks for the write up John,
I have heard about the chem sharp but never tried it. I used to use a dedicated belt sander and drill and it was doing a great job at sharpening, but now after TIG ing in the wind and sticking tips a lot I reaad up about using a diamond wheel for sharpening. So at harbor freight I found a set of 3 diamond wheels a few weeks back that come with 3 different wheel sizes and a .250 and a .125 arbour to chuk in in my router. I have a CNC router in my garage and the router is held nice and tight at the right height for me so I just chuck in the diamond wheel and get out my drill. Put the drill in the slowest turning speed like about 40 or 50 rpm and cuts the tungstens in just a minute so I keep all of my tungstens in a clear tube near me when welding so when I run out I go to the routed and sharpen all of them at once.
I would post pics but my camera sucks at close up pictures the points are not as shiney as a factory polished one but a LOT nicer than the belts sanded ones, And they seem to keep a better point now.
Gary