The Box Joint Machine (Another Stumpy Design) - Part 1

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Blog entry by William posted 04-09-2012 06:03 AM 7668 reads 2 times favorited 7 comments Add to Favorites Watch

There is much debate about which is better, dovetails or boxjoints. Well I like them both and want to be able to use them both easily. So after building Stumpy's Dovetail Machine, I decided I also wanted the Box Joint machine he designed. For once in my dang life though, I’m jumping right in without procrastinating.
First thing on today’s list was to do some shopping for supplies to get his thing started, then I was back in the shop.

The carriage part of the machine was simple enough.

Then I attached the sides.
I wanted the longest slide I could find for this project, you know, just in case. The longest I could find was only twenty two inches. They are full extension though in three sections instead of two, so they go way out there. Because of this, I attached my slides a tad differently than Stumpy’s design. With these three piece slides, I just had to play with it to figure out the best placement for them to work and still get the maximum extension of the carriage.

On the base, I used a trick I learned a long time ago for truing up runners when using both miter slots.
All you have to do is square one runner to your base. Glue it and attach it however you want, being extra careful that it is square. I used glue and some small screws.
Then, place some quarter inch washers into both miter slot.
Place your other runner into the other miter slot on top of the washers and run a small bead of glue on top of it. The washers will hold the runner slightly higher than the table.
Then, making sure the washers in the first miter slot are under where you’re setting the base down, set the base down with the slot that’s already attached into the slot and line up your other runner, front to back, before the glue sets.
Now go have a cup of coffee, cigarette, whatever you want, and let the glue set up for about twenty or thirty minutes.
Come back, carefully remove the base with the runners now in place. Turn it over and put screws into your second miter slot.
I’ve never had this method fail me. You now have a smoth running base that rides in both miter slots perfectly.

Then I attached all I’d done earlier to the base.

I had planned on doing more on this today. However, I don’t have my bronze bushings that go into this setup for the rod that runs through it. The only place open today was Home Depot. I tried explaining to the sale people there what I was looking for and all I got was these weird looks like they maybe thought I was retarded. So it looks like tomorrow I have to run back to town to a real hardware store and get some bushings.

If any of you are interested in this machine, or more specifically, building your own, HERE is where you can purchase the plans at.


7 comments so far

View Dave's profile


11429 posts in 2808 days

#1 posted 04-09-2012 01:50 PM

You are on machine making frenzy. Looking good William. Stumpy needs to hire you as a catalog.

-- Superdav "No matter where you go - there you are."

View DamnYankee's profile


3301 posts in 2530 days

#2 posted 04-09-2012 02:01 PM

Looking good William.

-- Shameless - Winner of two Stumpy Nubs Awards

View StumpyNubs's profile


7578 posts in 2768 days

#3 posted 04-09-2012 06:28 PM


-- Subscribe to "Stumpy Nubs Woodworking Journal"- One of the crafts' most unique publications:

View boxcarmarty's profile


16046 posts in 2328 days

#4 posted 04-10-2012 12:59 AM

Let’s see some sawdust…..

-- My mind is like lighting, one brilliant flash, then its gone.....

View William's profile


9949 posts in 2810 days

#5 posted 04-10-2012 01:22 AM

Thanks guys.
Part 2 is coming in a few minutes.


View Dave's profile


11429 posts in 2808 days

#6 posted 04-10-2012 01:27 AM

well hurry up. Slow pokin wood worker

-- Superdav "No matter where you go - there you are."

View DIYaholic's profile


19597 posts in 2643 days

#7 posted 04-10-2012 11:48 PM

I wasn’t able to comment earlier as I read this post as an email.
Now that I’m here, I can say; LOOKING GOOD!!!

Love the runner alignment tip. I will have to remember it for, the not so distant, future use.

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

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