It was at AT. Here it is, although it apparently involves buying a tru-angle sharpening device-

http://www.archerytalk.com/vb/showth...hreadid=115464

I just put some scary edges on my slick trick blades with ease using a "crock stick" nife sharpening station (chunk of wood w/ 4 holes drilled in it to hold the ceramic rods at various angle).

I just used the dark rods in the fine pitch holes.
Got the blades sharper than new (even sharpened the new ones) and now have no hair on my left arm!

I use the boss bullet 100s. You can get 6 for the price of 3 nitrons. they fly and penetrate just as well.