4 model

Free

knife sharpening for 20cm/8inch grinding machine

Thingiverse

Free

Whetstone Knife Sharpening Aid (NORTON 52mm India oil stone)

Thingiverse

Free

X-Acto Craft Knife Sharpening Jig

Thingiverse

Free

16 degree Angle guide (for knife sharpening stone)

Thingiverse