LumberJocks

Box joint jig idea I made that does various width 'teeth'

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Project by MakeThings posted 05-27-2020 04:59 PM 845 views 15 times favorited 15 comments Add to Favorites Watch

I love box joints but really hated a thin kerf style box joint that I’d used for about 2 years. I decided I wanted to be able to choose how thick I’d make each teeth. So I came up with a jig that allows me to make my own widths based on a threaded rod and a crank on the end. Because my threaded rod is a 3/8”-16, it means that for every turn it makes, I get 1/16” movement. Now I can count out cranks that I make on the left side of the jig to space things out for my box joints.

It’s a simple little gadget that has worked well. The last picture has all the different types of wood I used made into different widths. I used walnut, cherry, pauduk, aspen, purpleheart.

Really love how it came out. Simple.

I made some instructions on how to build it if you’re interested:

https://www.instructables.com/id/Easy-Box-Joints-Adjustable-Tooth-Widths/

And a video: https://youtu.be/sRsawJSLE7o

-- Most of my public projects: https://www.youtube.com/makethings





15 comments so far

View JHawkFan's profile

JHawkFan

37 posts in 3462 days


#1 posted 05-27-2020 06:31 PM

That is SO cool. I want one of these. I like box joints too and this is really great idea. Thanks for sharing it!!

-- ‎"Continuous effort - not strength or intelligence - is the key to unlocking our potential." - Winston Churchill

View MakeThings's profile

MakeThings

40 posts in 344 days


#2 posted 05-27-2020 08:23 PM



That is SO cool. I want one of these. I like box joints too and this is really great idea. Thanks for sharing it!!

- JHawkFan


I’m telling you, this thing is incredibly easy to make. Check it out…it’s fun to crank and make it work.

-- Most of my public projects: https://www.youtube.com/makethings

View Peteybadboy's profile

Peteybadboy

1955 posts in 2720 days


#3 posted 05-28-2020 11:09 AM

That is amazing. Question, why not put a tape measure accross the front or top? If you loose count (I certainly might) the tape would be a good back up.

-- Petey

View MakeThings's profile

MakeThings

40 posts in 344 days


#4 posted 05-28-2020 12:30 PM



That is amazing. Question, why not put a tape measure accross the front or top? If you loose count (I certainly might) the tape would be a good back up.

- Peteybadboy


Now THAT is a smashing idea!

Yes, especially for me and my wandering mind. I made a few wood booboos before I got the pattern right.

Thank you for that!

-- Most of my public projects: https://www.youtube.com/makethings

View sras's profile

sras

5456 posts in 3899 days


#5 posted 05-28-2020 12:52 PM

I’ve seen other ideas that make use of threaded rod, but this is about the simplest implementation (of the ones I can remember :).

Now where did I put that threaded rod…

-- Steve - Impatience is Expensive

View DDWW's profile

DDWW

127 posts in 1397 days


#6 posted 05-28-2020 02:34 PM

Nice I use the shop notes jig with different face plates and my dado blades, the others I’ve seen with threaded rod were much complicated. This is nice and simple the way I like my Jigs and my wife likes her husband.

View MakeThings's profile

MakeThings

40 posts in 344 days


#7 posted 05-28-2020 04:02 PM



Nice I use the shop notes jig with different face plates and my dado blades, the others I ve seen with threaded rod were much complicated. This is nice and simple the way I like my Jigs and my wife likes her husband.

- DDWW


We both have the same wife type then. Mine complains I’m too complicated for her though hehe

Thanks for looking!

-- Most of my public projects: https://www.youtube.com/makethings

View MakeThings's profile

MakeThings

40 posts in 344 days


#8 posted 05-28-2020 04:03 PM



I ve seen other ideas that make use of threaded rod, but this is about the simplest implementation (of the ones I can remember :).

Now where did I put that threaded rod…

- sras


Do me a big favor and share it with us if you do…and tag me somehow. I love seeing other people use my instructions…also helps if there’s a problem that I can clarify in the instructions.

-- Most of my public projects: https://www.youtube.com/makethings

View  woodshaver Tony C   's profile

woodshaver Tony C

7511 posts in 4123 days


#9 posted 05-29-2020 12:36 PM

I really like this idea! I even think I will make one after seeing the Video you posted.

I have an issue with something I saw on the video though!
I don’t mean to be picky but some people need to understand this! It’s Safety First

At 1 minute into the video I saw a huge mistake when cutting stock on his table saw! When using a miter to make a cut the fence should not be used unless you use it in a way that the stock will be clear of the fence when you move your stock into the blade.
The way the video shows him using the fence is wrong. The stock could get pinched between the fence and balade and this method could cause a serious kickback.
.

.

-- St Augustine FL, Experience is the sum of our mistakes!

View MakeThings's profile

MakeThings

40 posts in 344 days


#10 posted 05-29-2020 12:45 PM



I really like this idea! I even think I will make one after seeing the Video you posted.

I have an issue with something I saw on the video though!
I don t mean to be picky but some people need to understand this! It s Safety First

At 1 minute into the video I saw a huge mistake when cutting stock on his table saw! When using a miter to make a cut the fence should not be used unless you use it in a way that the stock will be clear of the fence when you move your stock into the blade.
The way the video shows him using the fence is wrong. The stock could get pinched between the fence and balade and this method could cause a serious kickback.
.

.

- woodshaver Tony C


Thank you, I appreciate the comment.

That was me in the video and I promise you I didn’t put that board up against the fence! You’re definitely right, that’s a huge no no that can have very dangerous backlash.

-- Most of my public projects: https://www.youtube.com/makethings

View MakeThings's profile

MakeThings

40 posts in 344 days


#11 posted 05-29-2020 12:52 PM

I fact, I watched it again, I would even go further to say that had that blade been against the fence, it would have kicked back aggressively.

Now I will agree that I probably should have removed the fence completely so as to not allow others the thought that it is okay. It is also closer to the fence than I probably should have allowed it to be (I probably left about an inch).

-- Most of my public projects: https://www.youtube.com/makethings

View  woodshaver Tony C   's profile

woodshaver Tony C

7511 posts in 4123 days


#12 posted 05-29-2020 07:32 PM

Thanks for the comment Mr “MakeThings”. I believe there are many people that understand how to make a safe cut but for the ones that might try this thinking it’s a good move I just had to say something.

Nice job on this project and your video! I made a Horizontal Mortise Machine using woodgears.ca plans and I can do box joints with it also. The machine uses a 16 threads per inch rod and crank! But I like your table saw idea better. Matthias Wandel has my machine on his web page near the bottom; look for Tony C.
My machine is posted in my projects also.
Keep up the good work and thanks for sharing!

-- St Augustine FL, Experience is the sum of our mistakes!

View MakeThings's profile

MakeThings

40 posts in 344 days


#13 posted 05-30-2020 12:46 PM



Thanks for the comment Mr “MakeThings”. I believe there are many people that understand how to make a safe cut but for the ones that might try this thinking it s a good move I just had to say something.

Nice job on this project and your video! I made a Horizontal Mortise Machine using woodgears.ca plans and I can do box joints with it also. The machine uses a 16 threads per inch rod and crank! But I like your table saw idea better. Matthias Wandel has my machine on his web page near the bottom; look for Tony C.
My machine is posted in my projects also.
Keep up the good work and thanks for sharing!

- woodshaver Tony C


Mr Woodshaver, I saw that post at woodgears…you did a good job! I built his box joint jig about 4 years ago and used it a couple times (it was too complicated for me and required too many gears). He is probably my biggest inspiration.

-- Most of my public projects: https://www.youtube.com/makethings

View DiyMinded's profile

DiyMinded

12 posts in 36 days


#14 posted 05-30-2020 11:30 PM

I really need one of these.

-- Jared, Diy Minded

View MakeThings's profile

MakeThings

40 posts in 344 days


#15 posted 05-31-2020 01:37 AM



I really need one of these.

- DiyMinded


You shall have one then.

-- Most of my public projects: https://www.youtube.com/makethings

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