Spline Jig

Strengthen your miter joints with Woodpeckers Spline Jig. A normal mitered corner lacks the long-grain to long-grain contact needed for a strong joint. Since it isn’t completely end-grain to end-grain, it will usually hold together for a while, but it’s weak and probably won’t survive seasonal changes. You can make the joint rock-solid and add a design element at the same time by adding splines across the miters.

Woodpeckers Spline Jig makes it simple to add splines to all kinds of mitered joints using either your table saw or router table. Just set the stops to position the cut where you want to add a spline, drop your pre-glued miter project in the jig and make the cut. The result, once you glue in the spline, is an attractive joint that will last for generations. Woodpeckers Spline Jig is constructed of two sections of extruded aluminum track supported by powder-coated steel legs that hold the tracks square to each other at two different height settings. The wider setting allows your project to ride just barely above the machine table. It’s perfect for projects as narrow as 1/2″ and up to 16″ wide. When your project exceeds 16″, just move the tracks inward to the alternate position. The jig includes four molded flip stops to make it simple to keep your splines aligned.

UHMW polyethylene plastic glide strips line the bottoms and edges of the legs, reducing friction and protecting your machine’s table and fence from scratches. Position your fence to put the kerf where you want it, keep a little pressure against the fence and guide your project through the saw blade. There’s no simpler way to add strength and stability to your joinery.

Use a router table for wider or dovetail spines. Here you can use straight bits to cut spline slots 1/4″, 3/8″, 1/2″ or larger. Install a dovetail bit to give your projects the classic look of dovetails. Cut the matching spline stock in two passes using the same bit. For a bold look, make your splines from stock that contrasts with the box material.

Slots in the Super Track accept the head of a 1/4″-20 hex head bolt. You can use almost any brand or style of hold-down.

Like all Woodpeckers products, the Spline Jig is proudly machined and carefully inspected in the Strongsville, OH facility, just south of Cleveland.