[jyl]

I went to the Lansky site and watched the video. Looks pretty cool. I might be afraid of getting careless and cutting the fingertips on the hand holding the hone. Also seems designed for normal-sized knives? Suppose you are sharpening a 14" slicer, do you have to reposition the clamp?

I learned a trick for measuring the angle. Take a square piece of paper (e.g. a post-it note) and fold along the diagonal, then fold again. That's 22.5 degrees, close enough to 20 degrees. Or, fold in thirds and get 30 degrees. And so on.