Sharpy

Sharp edges can cause severe wounds‼  use your brain!

KeepSharp

This is not a sharpener for dull blades! This is to keep a sharp blade sharp by conditioning the very edge and correct minor deformations from usage. Most sharpening tools work on both sides without keeping a proper angle. When moving the knife parallel to the guide (riffle), the sandpaper will touch the tip at an exact angle of 20°. ( for other angles use the script to make your own). 

post printing

Put a piece (25×25mm) fine wet Sandpaper  (grid 400 - 600 CAMI /  P800 - P1000) into the slit and bend over (you could also use adhesive).

Use

With a wet knife in the wedge by moving the knife back and forth without force. For better usability glue the sharpy onto a vertical surface. You can use it on both sides but this is not necessarily  — if you are using this on sheet metal, a axe or a scythe, please use the guarded version for little more safety not slipping with your fingers into the blade.

• To confirm functionality use a marker and color a small area of the cutting edge. When using the sharpy you should see the color removed at the edge. 
  •  if only a fine line at the very edge is removed ↦ you could use a lower angle version
  • if a line at the very edge stays colored ↦ you must use a steeper angled version