A swing plane board for golf rises from the ground at an angle and is used to track the plane of a swing. It is a good way to provide self-instruction on how to crack the ball a long distance. The board is designed to show you exactly how the club should come down and around in its swing before it strikes the ball. The travel along the golf swing "plane" is what the board helps your body learn. The trick to crafting a successful plane is to manufacture it at the lie angle pf your driver. This is the angle from the base of your club to the shaft.
Slide on a pair of work gloves, a dust mask and safety glasses to protect your skin, lungs and eyes.
Measure and cut a piece of plywood 4 feet by 8 feet. Sand the edges of the board with 80 to 120 grit paper. The 4-foot height allows for the board to extend under the shaft of the club and your arms. The 8-foot length is appropriate to craft the downward looping motion of your swing.
Cut a downward 45-degree angle at both ends of the two 2 inch-by-4 inch pieces. These two pieces should now resemble a polygon, with both ends angled in toward each other.
Ask an assistant to hold a protractor upright on a flat surface. Ask a second assistant to position and hold the bottom edge of the plywood board behind the protractor. Ask the second assistant to angle the board at a 50-degree angle, which is the lie angle of a golf driver.
Take one of the angled 2 inch-by-4 inch pieces and position it underneath the left side of the plywood board. Position it so one of the downward 45-degree angle edge is flush against the board. Side the 2 inch-by-4 inch piece down until it naturally touches both the board and the ground at the same time. Trace outline of the 2 inch-by-4 inch piece that is touching in the board. Repeat with the second angled piece for the right side.
Place the plywood board on a flat surface so the underside faces up. Bracket each angled 2 inch by-4 inch piece into place using wood screws. Secure each angled leg to the board with two brass brackets, one on each side.
Center the third 2 inch-by-4 inch piece flush to the bottom edge of the board. Secure the piece here with wood screws to act as a support beam.
Flip the board upright with the help of your assistants. Place three evenly spaced bricks behind the support beam whenever you use the board for extra stability.