Just wanted to let y’all know that the Ken onion knife sharpener is on sale right now for $112 on amazon. Just ordered mine as I have been watching it for a while.
Sure, the regular KO sharpener works just fine. But the KO grinder attachment uses wider and longer belts, gives you finer options for sharpening angles, and you can work with longer blades, even lawn mower blades. It's a grinder so you can profile blades, convex edge etc.
Don't hesitate to buy, one of my best purchases from the past two years. Might as well buy the replacement belt set on Amazon as well if you have lots to sharpen!