This simple little jig is extremely useful for routing blind spline slots in spline-mitered frames. Nail or glue together scraps of the frame lumber into the configuration shown in the sketch. The workpiece should fit accurately into the slot, where it can be pinched in place with a clamp. A plunge router is desirable, both for ease of starting the cut and because it has a built-in fence for centering the slot. But I imagine that with a little courage a regular router would do you could add an integral fence to the jig itself by tacking on more scraps, shimmed with cardboard where necessary. I scribed marks on the jig to show where to start and stop.

Jim Small, Newville, Pa.

Fine Woodworking Magazine, February 1984 No. 44

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