The Woodpeckers Spline Jig simplifies adding splines to mitered joints. Mitered corners lack the long-grain-to-long-grain contact needed for strong joints. By adding splines, you enhance joint strength and create an attractive design element. Use the jig with either your table saw or router table. Set the stops, drop your pre-glued mitered project into the jig, and make the cut. Glue in the spline, and you’ve created a durable joint that will last for generations.