3D Printable Knife Sharpener – Minimal Hardware

A fully 3D printable guided knife sharpener using a rolling sanding system to deliver consistent, angle-locked sharpening. Designed with no screws, bearings, magnets, or non-printable fasteners—only standard 3D printer filament required.The clamping mechanism secures most straight-handled or flat-edged knives at a fixed 16° angle. The rolling sharpener holds sandpaper disks applied with double-sided tape or glue. Two rotating arms allow smooth movement across the blade for even sharpening.No supports required. Print orientation and tolerances optimized for strength and usability.Best for kitchen and utility knives with straight or slightly contoured handles. Not suitable for knives with highly curved handles or thick bolsters.Assembly and usage demonstrated in an included YouTube Short for quick visual guidance.Print time: ~8 hoursFilament: ~120gAll parts printable with a 0.4 mm nozzleAll required files and cutting templates included. The way it works is very simple, the vice will hold