Taper tenon handplane jig - tenons to fit any reamer.

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Blog entry by mafe posted 12-24-2020 12:00 PM 842 reads 3 times favorited 9 comments Add to Favorites Watch

Taper tenon handplane jig
tenons to fit any reamer.

This is one of the many unposted blogs, I have on my computer, too little time, too many projects and too much joy, if such thing exist…
(Pictures were taken 3. ‎november ‎2016).

Actually an idea / solution I looked forward to share, but then forgot, but here it is.

I have a bunch of different reamers, some antique, some bought new, some for drill press, some for hand tools and even some made from an old saw blades, I made a long time back.

All of these reamers are useful for many tasks, one of them is making legs on furniture’s, where you want a tapered mortise and tenon joint.

Most of my reamers are antique or home made, so to go and buy a tenon cutter for each would be impossible, the bought once are quite a few, so it would be expensive – so this is where this idea came, by thinking can I make a simple solution to this…

The idea is so simple that it’s almost too easy.
You need a piece of scrap wood, a saw and a handplane.
Make a reamered hole in a piece of scrap.
The other hole was just there and forget about the pencil marks, they were a part of the thinking process.

Now draw a straight line to the end of the wood, from the top of the reamered hole.

Do the same on the back and connect them, with a line.

Set the angle.

Set your table saw or get ready with your hand saw.

I first cut along the line.

Like this.

Then sneaked in, to get a hole size I found fair.
If you do it by hand, this can be done with a hand plane after.

Finally I clamped a block plane onto the wood and positioned the blade in the center.

Then put a dowel in the hole and turned it around and my ohhh this is effective.

Found it easier to use it, when it was clamped to the bench like this, so I had both hands free to turn the dowel.

Shavings looks just like a pencil sharpener.

I suggest making it a wee less aggressive, by cutting less deep into the hole. You can see this on is quite aggressive.

That’s easy as nothing and almost for free.

Yeps, less can be a hole lot.

Wishing you all a wonderful Christmas.

Hope it can be to some inspiration, or legs to sit on.

Best thoughts,


-- MAD F, the fanatical rhykenologist and vintage architect.

9 comments so far

View Dave Polaschek's profile (online now)

Dave Polaschek

6814 posts in 1587 days

#1 posted 12-24-2020 12:22 PM

I’ve made multiple tapered tenon cutters with plane blades. I have no idea why I didn’t think of using a block plane, rather than fiddling with a way to mount a plane blade and have it somewhat adjustable. Brilliant!

My current solution is a hollow auger followed by a spoke pointer which does the trick if the spoke pointer matches the taper angle on the reamer, but if not, I end up fiddling with it by hand.

-- Dave - Santa Fe

View Sylvain's profile


1199 posts in 3505 days

#2 posted 12-24-2020 01:57 PM

using an existing adjustment mechanism is brilliant.

-- Sylvain, Brussels, Belgium, Europe - The more I learn, the more there is to learn

View lew's profile


13311 posts in 4761 days

#3 posted 12-24-2020 02:25 PM

I Love It!

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View madts's profile


1953 posts in 3345 days

#4 posted 12-24-2020 04:38 PM

Very, very cool Mads


-- Thor and Odin are still the greatest of Gods.

View MrWolfe's profile (online now)


1451 posts in 1129 days

#5 posted 12-24-2020 04:48 PM

Great jig MaFe!!!
Thank you very much and Merry Christmas!

View James E McIntyre's profile

James E McIntyre

1099 posts in 2297 days

#6 posted 12-24-2020 05:09 PM

Great idea Mafe.
I may have missed it in the commentary, what did you use to make the tapered hole?

-- James E McIntyre

View tyvekboy's profile


2105 posts in 4018 days

#7 posted 12-24-2020 05:35 PM

Great solution. Thanks for sharing.

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

View Jim Jakosh's profile

Jim Jakosh

25907 posts in 4111 days

#8 posted 12-24-2020 08:40 PM

How very clever, Mads. Your mind never rests!!!!!!!!!!!!!!

Cheers, my friend and Merry Christmas!...............Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View Joe Lyddon's profile

Joe Lyddon

10961 posts in 5058 days

#9 posted 12-24-2020 09:24 PM

COOL trimmer. sloper… Merry Christmas!

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:

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