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Add decorative splines to big projects using a biscuit joiner

Like most woodworkers, when cutting slots for exposed corner splines, I typically use a tablesaw jig with a V-shape saddle to hold frames upright. But when faced with cutting such slots in a large table apron too cumbersome for a tablesaw jig, I built a fixture that helps get the job done with a biscuit joiner.

To build the fixture, simply cut 45° bevels on the ends of two fence pieces (A) and glue and screw those to a plywood base (B). Glue and screw in place a pair of extensions (C) to form a V-saddle. Then, remove the screws closest to the cutting area to prevent any chance of the blade striking them.

Cut a slot by plunging in the biscuit joiner to the left of the fence’s center and sliding the joiner to the right. Vary the heights of the slots by placing scrap under the biscuit joiner. Finally, plane spline stock to fit the  kerf.
—David Chaffee, San Diego

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