I have made a new attachment to my sharpening tool Chef. The name is EdgePal Rail.
The rail have a sled and the pivot point are fasten on the sled - and this make makes that the pivot point can be moves from side to side. Chef it self can move the pivot point forward and back, and up or down. So, with the Rail can the pivot point be moved in 3 dimensions.
This function are nice to have for many different things, for example very long knife blades can be grinded and sharpened with the exact the same edge angle all along the edge, inclouding the belly and the tip - and for serrated blades as in the picture.