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Set the table saw's blade to a height of 3/4". Set its fence 7/16" from the blade. Place the drawer's front piece in a vertical position. Send the piece through the table saw, cutting across its width.
Place a 1/8"-thick piece of Masonite shim between the fence and the drawer's front. Make a second pass through the table saw, again cutting across the width of the drawer front. For the third cut, place the 3/8" plywood on the table next to the blade to elevate the work piece. Clamp it in place. Place the drawer's front in a horizontal position on top of the 3/8" plywood with the slots already cut facing the blade (Image 1). Send the drawer front through the table saw. This cut will create the locking tongue (Image 2).
To cut the drawer's side, clamp one piece of 1/4" luan plywood to the fence and the second piece to the 3/8" plywood (Image 1). Make the cut with the short side of the drawer's side against the fence (Image 2). This will create a small dado for the drawer front's locking tongue to slide into.