Review on Messermeister AG16 Sharpening Angle Guide by Andy Jolley

It seems to hold a good angle on wet rock and the rollers help it slide, but it scratches the knife. You just have to slip it over the knife and it will stay tight on its own, but this slip will scratch the knife, it creates a perfect line down the side of the blade. I bought a cheap knife to practice on the wet rock so it's not the end of the world. I'm definitely not going to use this on my good knives, which was the main reason I bought this guide.