By the way, if you use the Rothar/wensel heads they sharpen up without any lansky etc, you just hold the file or hone level with both blades. Doesn' t come up as " sharp" as a lower angle job, being roughly 60 deg vs 45 deg, but at 200 fps or whatever, that is irrelevant. Also the new Wensel is like a rothar, but has replaceable blades. The thing I like about Trad heads is the toughness. I want them to use a socket, not an rps, which may leave out the new Wensel.