Auto aligning chisel sharpener by rrrlasse

Last crawled date: 2 years, 11 months ago

This jig is for sharpening chisels on sandpaper. It has auto aligning pins and wide sliding feet that gives a perfectly square bevel, at 25 degrees.
Prerequisites: Two 10 mm M5 screws and two nuts.
Print with extra wall/top/bottom thickness for better strength. When printed, pressfit the two nuts in the roof inside the jig (this can be a bit tricky).
Print with no support.
How to use it:
1) Loosen the screws and insert the chisel so far that its bevel is directly above the outer edge of the jig (see photo).
2) Insert the two aligning pins from above to get the blade straight. The pins might be a bit tight until they wear in. Else polish them with a bit of sandpaper.
4) Tighten the two screws very lightly. Not much torque is needed to keep it stable. Then remove the pins,
3) Now slide the jig on a plane surface with sandpaper, such that the sliding feet stay outside the sandpaper. You can hold the jig in two positions (see photos). The position where the chisel handle points away from you lets apply lots of downwards force.
Max chisel width is 30 mm, and max blade height is 7.5 mm (hope it's enough, else comment in the comments).