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Spline jig strengthens miter joints

Easily cut slots for splines with this tablesaw jig

Build the jig from 3/4" MDF. Bevel one end of the rear cradle at 45-degrees, then glue it to the upright at a 45-degrees angle to the bottom edge of the upright. As you glue the front cradle in place, check that the two cradle pieces are 90-degrees to each other.

Next, cut the pieces for the saddle. The saddle fits over the tablesaw rip fence without any play, but still allows the jig to slide smoothly. When attaching the saddle, the upright/cradle assembly should rest on the table of the tablesaw.

To use the jig, make a mark on the bottom of the corner receiving the spline to indicate the depth of the kerf. Place the project in the cradle, and raise the blade so its highest tooth just touches that mark, as shown in the photo. Slide the jig back from the blade and reposition the rip fence to cut the kerf for the spline.


Comments (4)
dick_kautzmann wrote:

Also, depending on how much different the placing is, you may have open spaces in the cradle where you were hoping there is a backer to prevent chip out.

1/21/2016 05:00:09 PM Report Abuse
dick_kautzmann wrote:

to furniturerehab: I think you could reuse this. Especially if the splines are in the same place. If you change the placing of the splines a lot, then you may have to replace the cradles from time to time.

1/21/2016 04:56:39 PM Report Abuse
furniturerehab wrote:

Is this jig re-usable? It seems like it's a one and done jig.

12/3/2015 03:30:30 PM Report Abuse
segfdkrz wrote:

Great home goods ideas! I have been blogging my home design projects on What do you suggest using for home decor?

3/14/2012 12:20:07 PM Report Abuse

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