Right Angle Braces - Wood Mag Tip of the Day For each pair, start with a square of Baltic-birch plywood and cut it in half diagonally. Then cut notches for the clamps, above. You can vary sizes to suit larger or smaller projects. The braces help
Yet another simple idea that I either never thought of or had forgotten (same end result) : pinner said: If you clamp them to a carpenters square you not only get a true 90 degree angle you leave your hands free to drill the screw into place.