Box Joint Jig

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Project by Woodknack posted 03-28-2015 03:43 AM 9196 views 20 times favorited 6 comments Add to Favorites Watch

The jig is designed for a single blade, in my case a 1/8” Freud rip blade. A pin that matches the kerf rides between spacers that are a 1:1 ratio to the size box joints you want. First time I was anxious and didn’t make the spacers consistent so the joints turned out crappy. Second try I used 1/4” plywood for the spacers and the joints came out perfect, snug but enough room for glue. The kerf is 1/8” and the pin is just about .002 smaller.

More detail here:

Based on Woodfather’s design here:

Click for details

-- Rick M,

6 comments so far

View doubleDD's profile


10715 posts in 3291 days

#1 posted 03-28-2015 04:31 PM

It looks pretty simple to make and operate. I will have to look into this further.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View Dan Krager's profile

Dan Krager

4800 posts in 3482 days

#2 posted 03-28-2015 08:51 PM

This is a pretty clever jig, Rick. it’s down a ways on my bucket list because I have a multipurpose jig for a router that uses the same principle. It’s a giant kefmaker for the tablesaw! Nicely done!


-- DanK All my life I've wanted to be someone. I see now I should have been more specific.

View TheWoodfather's profile


135 posts in 2934 days

#3 posted 03-28-2015 11:58 PM

Great version Rick, love the added handle. Used it on any projects yet or just test cuts?

-- - Here, for learning.

View Woodknack's profile


13584 posts in 3628 days

#4 posted 03-29-2015 02:27 AM

No projects, I just finished it yesterday. Be a few days before I build any boxes.

-- Rick M,

View Roger's profile


21055 posts in 4052 days

#5 posted 03-29-2015 01:03 PM

A nice design of a gr8 jig. Look forward to seeing some boxes and such.

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. [email protected]

View Diggerjacks's profile


2330 posts in 4387 days

#6 posted 03-29-2015 05:30 PM

Hello Rick

Very nice jig
Good idea to add the handle

I like it
In my favorite for the future

-- Diggerjack-France ---The only limit is the limit of the mind and the mind has no limit

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