[another] tenon jig for table saw

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Project by antmjr posted 10-24-2009 11:37 AM 17322 views 17 times favorited 18 comments Add to Favorites Watch

hi all, I post my first project, hope you enjoy it. This jig works on European-style table saws (it needs a sliding table). I have uploaded a little clip on Picasa that shows how it works:

Made out of black locust from my garden. Basically the piece of wood to work is held firmly in position while you move it by means of the handle. My blade saw is 3,2mm thick, while the pitch of the leading screw is 3mm: that’s very useful, because you can get the tenon slightly narrower then the mortise (the slot).
The leading screw is metric, square thread, similar to the ACME thread. To tap the nut (the nylon cylinder you see in the middle) I had to make a tap first, you can see it in the second photo, put near the handle.

As you can see, the handle has several little slots, cut on 3 disks: in the first there is only one slot (i.e. one stop every turn of handle, which means 3mm feed), the second disk has 3 slots (i.e. 3 stops/turn, 1mm feed each stop), the third 6 slots (0,5mm feed); under the handle disks (see the third photo), there are 3 pins with springs engaging the slots: this way one can control whatever move with a basic step of 0,5 mm (frankly 1mm feed would be far enough).

The type of joint you can build with this jig is extremely strong and tight. The only problem I’m experimenting is that the water based glue (vinylic) may swell the wood, slightly BUT sufficiently to prevent assembling the parts. In the 6th photo you see a joint of two 15×7.5cm black locust pieces; in this case I’m wondering if it will be the case to use resocinol or epoxy glue instead.

-- Antonio

18 comments so far

View stefang's profile


17040 posts in 4621 days

#1 posted 10-24-2009 12:15 PM

Amazing gig Antonio. Welcome to LJ. It will be great having another member with such a high skill level. It sure would have been nice if you could do a blog on making this jig. I’m sure a lot of members would appreciate it. I have a slider on my tablesaw. I know the majority of woodworkers don’t have one, but, with our large membership I’m sure there are quite a few out there who do. Thank for this first great post. I hope you enjoy LJ as much as I do. The members are a great group of positive and helpful people.

Looking forward to seeing more of your projects. I would just mention that more people will see this wonderful gig if you tagged it in “gigs” which is an option that appears at the bottom when you are posting a project. If you haven’t and want to, you can edit your project and add the tag.

-- Mike, an American living in Norway.

View Loucarb's profile


2388 posts in 4732 days

#2 posted 10-24-2009 01:00 PM

Great craftsmanship and design. Well done.

View HalDougherty's profile


1820 posts in 4524 days

#3 posted 10-24-2009 02:11 PM

Fantastic work. How about some pictures of your boat projects?

-- Hal, Tennessee

View Innovator's profile


3589 posts in 4701 days

#4 posted 10-24-2009 02:16 PM

Very nice looking jig.

-- Whether You Think You Can or You Think You Can't, YOU ARE RIGHT!!!

View antmjr's profile


262 posts in 4471 days

#5 posted 10-24-2009 03:28 PM

thank you all; Hal, give a look at this peapod (and here a little trip on board of her) or at the boat I’m currently building if you like

-- Antonio

View Cantputjamontoast's profile


416 posts in 4720 days

#6 posted 10-24-2009 04:01 PM

That is one nice jig!!!!

-- "Not skilled enough to wipe jam on toast!"

View Daniel Dugan's profile

Daniel Dugan

13 posts in 4452 days

#7 posted 10-24-2009 04:05 PM

Amazing work Antonio. Thanks for bringing it.

-- -Daniel. "To be, rather than to seem" (not my words, but I like them)

View rosewood's profile


234 posts in 4628 days

#8 posted 10-24-2009 06:29 PM

great jig,
i should make ones, thanks for sharing,


View a1Jim's profile


118297 posts in 4864 days

#9 posted 10-24-2009 06:54 PM

Very cool Jig Antonio It kind of works on the same principle as the drift-master fence. If someone does not have a built in sliding table you could build a sled to put this on.


View WoodWrangler's profile


50 posts in 5077 days

#10 posted 10-26-2009 02:49 AM

Very cool. Reminds me of this screw advance box joint jig I saw a while back …. (see video at bottom of page)

You do some nice stuff!

View antmjr's profile


262 posts in 4471 days

#11 posted 10-26-2009 10:21 AM

Thank you all again.
Jeremy, frankly I already knew that Canadian guy and his inventions, and obviously I got inspired by him (I beg pardon I don’t mention him in the general presentation). Anyway there are some differences between his jig and mine. Our european table saws don’t allow mounting a dado blade, hence if you want, say, a 4 mm mortise, you need two cuts: first you turn the handle once (3mm) and cut, then you make a fraction of turn (1/3-> 1mm) and cut; that’s to say you must be able to change the step of the move as needed (I mean, a fixed step doesn’t work).
I have modified my table saw slightly, to get a router table (see here and the following pics if you like) and this jig works well on it too.

-- Antonio

View 559dustdesigns's profile


633 posts in 4455 days

#12 posted 10-26-2009 10:34 AM

Very nice Jig. WoodWrangler beat me to the punch, You might check out the cool contraptions that Matthias Wandel has come up with, at You both have similar engineering talent, I think you would enjoy this site, if you haven’t seen it. Your jig design is very impressive keep up the great work. Thank you for sharing with us.

-- Aaron - central California "If you haven't got the time to do it right, when will you find the time to do it over?"

View antmjr's profile


262 posts in 4471 days

#13 posted 11-08-2009 10:58 AM

thank you rob. Are you sure you have spelled “Lentii” correctly? I have searched wikipedia, and the only town with similar name I have found is Lenti (with only one “i”) in Hungary, 400 km far away from my home.

-- Antonio

View Viktor's profile


476 posts in 4706 days

#14 posted 02-19-2011 10:27 AM

Great jig. Just wondering what kind/brand of saw it is. Seems like it is a compact table top model, yet sliding table is quite large and goes right past the blade. I was almost thinking of building one myself, and then saw this one. This is an ideal configuration for a hobby shop.

View antmjr's profile


262 posts in 4471 days

#15 posted 02-19-2011 11:03 AM

Thank you Victor. My table saw is made by Metabo (Germany), but I don’t know if they export their stationary tools to USA, I haven’t found my model (PKU250 with long sliding table) in the international catalogue.

Metabo International
My table saw on the Metabo Italia Catalogue

One – if I may joke – one should have a European table saw AND an American one! The Europeans have the sliding table but cannot mount dado blades, the Americans seem more massive and can mount dado blades. However my table saw is – I guess – expansive, I paid some 2600 euro or so (reduced!). I didn’t buy the optional lateral plane and the drawers below.

-- Antonio

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