Rather than buy a specialty clamp set for mitered corners, you can make your own like I did. Simply take some inexpensive plastic spring clamps, remove the pads, and drill holes to accept #4×1" flathead wood screws.To clamp up a mitered corner, drive the screws through the clamp so the tips will just bite into the wood, and clamp the joint as shown. Driving the screws a little further ensures that the clamp won't slip.—Mike Radcliff, Nashville, Tenn.