Having relinquished my tool & cutter grinder, I'm now again thinking about how to sharpen end mills - just touch them up on the end. I know for sure you can't do as good a job but I'm thinking about part no. 287-6840 here:I've seen these before, but that was before I knew how to sharpen an end mill. I have a question for someone who has one of these: there are 3 angles to worry about sharpening the end of a fluted end mill. The first angle is the primary relief angle; the second is the secondary relief angle. I'm sure this fixture will handle those correctly. The other one is the so-called "fishtail" angle of maybe 1° on the very end of an end mill. If you haven't noticed it, if you hold a new end mill down against a piece of plate glass and look under a strong light with magnification you will see that the tips of the flutes touch but that the centers don't. This is the "fishtail angle". I want to know if this fixture (or similar) handles this angle correctly.