Simple Box Joint Jig

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Forum topic by MrRon posted 09-30-2013 11:07 PM 1468 views 0 times favorited 1 reply Add to Favorites Watch
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5086 posts in 3391 days

09-30-2013 11:07 PM

Topic tags/keywords: jig

Here is a ¼” box joint jig that is a bit unconventional. To use:
1. Attach a piece of 2x material to the miter gauge.
2. When you know the width of the material you want to cut a box joint in,
3. Set the material, right side against the dado blade.
4. Set the stop block against the left side of the material
5. Start with a ¼” spacer to index the material to the wood the distance of ¼”
6. Make the cut.
7. Replace the ¼” spacer with a ¾” spacer and make the second cut.
8. Combine the ¾” spacer and the ½” spacer and make the third cut.
9. Continue until all the cuts have been made.
This method is a bit labor intensive, but it eliminates the need to get that first pin exactly right. I wouldn’t use this method if I had a lot of joints to make. For a one off project, it might be fun to use. This can also be used for 3/8” box joints, by changing the sizes of the spacer blocks.

1 reply so far

View bigblockyeti's profile


5229 posts in 1868 days

#1 posted 10-03-2013 12:49 PM

It’d be really slick if you could figure out a way to flip the spacers down into place, kinda like the stops on some fancy miter gauges. Having them in the right order would be the tough part.

-- "Lack of effort will result in failure with amazing predictability" - Me

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