Router Plane, of sorts ie. Grannies Tooth

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Project by ChunkyC posted 09-03-2011 03:16 AM 3095 views 3 times favorited 4 comments Add to Favorites Watch

So this is very typical for how of one project goes. It always seem to lead into two others.

Project No. 1: I needed a way of removing some ridges in the bottom of some groves. My shoulder planes are too big for the groves and I don’t own a proper router plane. I’ve seen in the past where people have made a router plane, of sorts, out of a sharpened allen wrench.

On to Project No. 2: So I tossed this together out of some scrap 5/8” walnut and an old allen wrench. Picture 2 is the back of the plane (sorry, just don’t know what else to call it) I had to fashion some sort of knob because I could find a thumb screw longer than 3/4”.

It works ok but iIt has a tendency to dig in from time to time. Good thing is, you’ll never see it so I guess it doesn’t have to be pristine perfect. Also setting the depth is a bit tricky. I’ll have to work with it more to get the hang of it.

So now that I made an allen wrench router plane, I needed a repeatable way of sharpening the allen wrench.

Bring on Project No. 3 Allen wrench router plane sharpening jig. It’s just some pine for the vertical with a grove in it for the sharpening fixture to slide up and down on screwed to a base of 3/4 ply for added stability. The sharpening fixture is some scrap walnut from a piece of 5/4 that I have that’s not good for anything but stupid stuff like this.

I finished all of the pieces with a coat of GF sanding sealer and two coats of shellack. Once everything cures, I’ll coat it all with a liberal helping of wax.


-- Chunk's Workshop pictures:

4 comments so far

View WayneC's profile


13754 posts in 4121 days

#1 posted 09-03-2011 03:18 AM

Very cool. I like the worksharp Jig.

-- We must guard our enthusiasm as we would our life - James Krenov

View a1Jim's profile


117115 posts in 3601 days

#2 posted 09-03-2011 03:21 AM

Old timers would call it a grannies tooth style router plane.

-- wood crafting & woodworking classes

View ChunkyC's profile


856 posts in 3278 days

#3 posted 09-03-2011 03:26 AM

Grannies tooth! Thanks Jim. I was embarrassed calling it a router plane but couldn’t come up with anything else.

Memory is the second thing that goes…

-- Chunk's Workshop pictures:

View vipond33's profile


1405 posts in 2522 days

#4 posted 09-03-2011 05:36 AM

I find it fairly easy to set the depth on my two router planes. Try setting the iron too low and place a business card or regular paper under the wings. Press down in the groove, tighten and remove the paper. This will give you a cut between .010” and .004”, coarse to fairly fine.

For myself I would make the body a little longer as this will help you with the dig in caused by rotating under back pressure from the cut. Going against the grain or too heavy a cut will always do it too, but there you’re on your own.

This is a resourceful project you’ve done and they are some of the best.

-- gene@toronto.ontario.canada : dovetail free since '53, critiques always welcome.

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