Ted, have you used the grinding rest and the end mill sharpening jig yet, to sharpen the flutes on end mills? I tried it a couple of days ago, with a temporary mount and found my setup wasn't very rigid and I had a tough time fine tuning the depth of cut. The biggest problem I had was the crappy grinder vibrating, which caused the grinding rest fence to loosen and that ended up bad for the top end of one of the flutes. I eventually got it to work and can see it has potential to be very useful but will require some more work on my part to stiffen the setup and make the grinder run smoother. The good news is, the end mill flutes were sharp and worked great even after my less than stellar sharpening attempt.