Sharpen Jointer and Planer Knives
This jig is very useful for sharpening jointer and planer knives at home. The method uses the scary sharp method (wet sand paper on plate glass or granite). Mending plates are used to secure the knife in the jig. Small brads are used to position the knife from the front of the jig. It has a bevel angle adjustment rod which has a small router bearing at the end. Once the bevel angle is adjusted you push the jig forward and backward accross the wet sandpaper in order to sharpen the knife. Works with both planer and jointer knives. For a video of this jig in action please go here.
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Upside down showing the hardware that holds the knife. I am using mending plates to hold the knives in place. The mending plates are bent slightly. Small brads are used to position the knife from the front of the jig.
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Sharpening jig with a planer knife installed. A small router bearing is placed on the end of the adjustment rod which rolls on the sand paper.
Comments
I like the simplicity. It looks like it would work quite well.
Thanks for posting this!
I'm definately going to make this. Great video by the way.
--Tyrone
Forgot to mention this in my post:
Lee Valley carries a similar jig for Jointer knives only.
http://www.leevalley.com/en/wood/page.aspx?p=33002&cat=1,43072,43078&ap=1
The one you made seems to be better as it rests on a bearing rather than a rounded bolt.
Concept is good. Jig is actually very stable. BUT Sandpaper wears out in no time at all. I would say only good for the tiniest amount of micro beveling at the edge. I tried it and found sandpaper smooth in less than a minute of honing.
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