hey this is my knife sharpening jig. it holds a knife in place with magnets while sharpening. there are 3 variants (15°, 20° and 25°) 

you will need 2 m3x10mm bolts and 2 m3 nuts as well as 5 10mmx3mm magnets.

it is best to lubricate the rails in some way (graphite, silicon oil, lube… i won't judge)

settings:

• 2 walls
• no support
• 0.2 mm layer height
• 10% infill

limitation:

this jig is not well suited for narrow knifes because the magnets pull the knife away from the stone. smaller knifes are easier to sharpen tho.

let me know what you think