Mostly printed knife sharpener

This is a knife sharpener with fixed angles for perfect sharpness. Only 3 magnets, sandpaper and 8 mm steel rod required additionally, all the rest is printable.
Sandpaper template is provided in the PDF (from vector file) so can be laser cut. No glue required to attach sandpaper to the sanding block.
The magnets used are neodymium 20x10x4 N42 magnets with mounting hole. Mounting hole is optional, since magnets can be glued in.