|Project by gjd||posted 05-29-2010 06:39 AM||5291 views||24 times favorited||19 comments|
I had some nicks in my joiner blades and was having some difficulty getting them as sharp as I thought they ought to be. After getting some advice from some fellow jocks I started this project today. It’s a scary sharp approach mixed with a sharpening jig based on one made by Lumber Jock Garagewoodworks.
The scary sharp platform is a 3/4” (actually slightly less) thick mirror that had been used in the printing industry and is surrounded by 3/4” plywood. This is all attached to a 1/2 in ply base. To hold the paper down, I attached two pieces of red oak with bolts and wing nuts. To keep the paper from slipping I added 1/4” thick weather stripping to the bottom of the oak side pieces.
The sharpening jig is not as versatile as the jig that inspired it but is designed around my joiner knives. Materials used: about 10” of hickory flooring, a 3/4” x 3/4” piece of red oak, 2 bearings and some nuts and bolts.
The largest piece of the jig is the part that holds the joiner knife. Differently than the original, I made a rabbet for the knife to fit into and drilled holes to attach the knife with bolts (original used steel bars under tension).
The support post is the red oak that has the 2 bearings on the bottom to make it glide smoothly. (I added the 2nd bearing to make it more stable). The main body moves up and down to change the cutting angle of the jig. It locks into place with a thumb bolt.
I finished one knife and like the result.
To see how the jig is made visit garagewoods and view his instructional video.
-- gjd Southcentral Wisconsin