AFSHARP - Guided Sharpener

The secret to a good edge is to always maintain the same angle, and that’s difficult to do by hand. This sharpener holds the knife in place and guides the sandpaper or whetstone along a rod, so the angle doesn’t change from one pass to the next.
The knife is held in place by two rubber-padded clamps and a stop on the spine, and the rod slides along a scale engraved with the blade’s height to ensure the correct angle. It uses standard sandpaper strips or 150 × 20 mm diamond stones and plates. The top of the sanding holder is flat to accommodate a digital magnetic angle gauge, which reads the actual angle to within 0.1°.
It attaches to any table surface between 12.5 and 40 mm thick using the printed clamps and is assembled using only M5 screws, an 8 mm wrench, and two Allen wrenches. 3D-printed in the workshop using PETG.