Been using a 2 inch belt grinder with a few hundred bucks worth of belts and rouge 😊
Works great with axes too.
Seriously, not the answer for most folks. My grandpa could sharpen on stones freehand; I can’t. One thing all methods have in common is this - if you don’t raise a burr, it’s not sharp. Secondly, all methods other than freehand use some hardware to keep the blades angle against the stone aka bevel constant. If you can achieve that it’s a matter of selecting increasing grits unto a hone.
Still looking for a kitchen one. Dull knives are annoying.
