Another Box/finger joint jig

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Project by geekwoodworker posted 06-05-2014 10:35 PM 7623 views 24 times favorited 10 comments Add to Favorites Watch

Built this jig last year so I could make all my tool stands with box joints on the large stile and rail sides. In the last pic is a close up of my tool chest and the box joint I made for it.

With this jig I can clamp it to the piece I want to route the joints on. It is easier this way then trying to do it on the table saw.

The T-slot is made from maple and then a dado is routed and then glued the T-slot into it. These fingers are all the same size but you can use various sizes if desired. Bolts are 5/16” and are left overs from a TV wall mount. I use a flush trim bit in the router to make the cuts.

10 comments so far

View SteveGaskins's profile


762 posts in 3926 days

#1 posted 06-06-2014 12:11 AM

Great jig. Very useful tool. Thanks for posting.

-- Steve, South Carolina,

View waho6o9's profile


9135 posts in 3915 days

#2 posted 06-06-2014 12:29 AM

Do both pieces mate on opposite sides then you route

and you’re done?

Seems efficient and well planned. Very good.

View Jim Jakosh's profile

Jim Jakosh

27258 posts in 4444 days

#3 posted 06-06-2014 01:52 AM

Very nifty!! I like that jig. Home made jigs are the best and you appreciate them more because you made them your self!! Cheers, Jim

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

View geekwoodworker's profile


378 posts in 2799 days

#4 posted 06-06-2014 10:24 AM

waho6o9: Yes. when making a box you will put one piece in tight to the stop block and then route. The joining piece is put on other side tight to stop block and route. The fingers on the jig can all be different sizes as long as they are tight together. This would give you different sized fingers on your box that will fit tight and give a different look other than the standard all fingers the same size.
Got the plans from shopnotes magazine but not sure what issue.

thanks for the comments and questions.

View a1Jim's profile


118309 posts in 4916 days

#5 posted 06-06-2014 02:43 PM

View Blackie_'s profile


4883 posts in 3851 days

#6 posted 06-06-2014 05:12 PM

Ah finely a fellow Router Table Box Joint jig user, I thought for sure when I saw this post it was going to be set for the table saw :)

I so much prefer the router table over the table saw, you don’t have to mess with swapping out the blade on the table saw plus router bits give cleaner cuts, the jig I use though calls for an up spiral, I just simply drop a Whiteside up-spiral in and go, and it’s a huge plus if you have two router tables as you can just leave one setup.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at

View helluvawreck's profile


32122 posts in 4205 days

#7 posted 06-06-2014 06:10 PM

You did a fine job on that jig and it will be a great addition to your shop.

helluvawreck aka Charles

-- helluvawreck aka Charles,

View SCOTSMAN's profile


5849 posts in 4924 days

#8 posted 06-06-2014 08:00 PM

Also doing them on the tablesaw would not work in Europe as dado blades are deemed dangerous and therefore banned by European law,I know you could make them with a single blade, I don’t know what they would look like.I bought an incra dovetail jig and could not get it to do dovetails at all and I am no dummy I tried and tried with no success.I really went over it time and again however the width of the base of the tails was always way out leaving a gap . It did work well with Finger joints though and When I make my new router table I would like to try this method of yours Brother (too tired to think seriously about it tonight) LOL anyway I love box jojnts and actually prefer them to dovetails mostly anyway.I sold my incra jig I could not find anyone to say they worked fine and they had zero problems with it but none ever did.Alistair

-- excuse my typing as I have a form of parkinsons disease

View geekwoodworker's profile


378 posts in 2799 days

#9 posted 06-06-2014 08:08 PM

Mathias Wandel did a test on box joints/finger joints and dovetails on which is actually stronger.

Check it out here.


View okiwen's profile


2 posts in 974 days

#10 posted 05-26-2019 04:31 PM


So I realize that this thread is old, but Geekwoodworker (or anyone), what are the dimensions that you have found to work the best on this jig? Have you made upgrades or changes? I am off to by some birch ply from HD and have just purchased a T-Track and am going to make bee boxes the next two days. Thank you for the input. I am going to make the fingers using a plastic cutting board.

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