8 ways to make end-to-end joints that hold
Plain, practical straps
Use simple metal or plywood straps to reinforce butt joints where they can be hidden or where appearance isn't important, such as on the back side of a wide crown molding where you can't afford any waste. Making your own custom-sized straps from 1/4" plywood saves you money and provides a strong gluing surface.
To install a wooden strap, cut it as wide as the workpiece allows. If you're joining pieces with a profile on the opposite face, such as molding, locate the screw holes over the thickest profile points -- at the peak of a ridge or curve, for example.
To make the joint, glue and screw one side of the strap to a workpiece. After the glue dries, glue the other half of the strap, and clamp the assembly to a flat surface. For a tight joint, raise the other workpiece about 1/4" at 3' from the end being jointed. Then press the pieces together as you add the mounting screws, as shown right. Lay both pieces flat and allow the glue to dry before handling the joint.
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