A French cleat is a way to hang heavy items onto walls. A single piece of wood is split in two at a angle. Alternatively, two pieces of wood are cut at angles to fit one on top of the other. Use a French cleat for mounting shelves and bookcases on a wall.
Making a French Cleat. Start by marking a centerline across the thickness on the end of a board. Then mark a line bisecting this centerline, as you see here. Line up this mark with the blade of the saw. by Chris Hill
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