- Cut a thin piece of the plywood with the circular saw and attach it to the top of the rest of the plywood using wood glue. Be sure to have excess plywood on both sides of the glue joint.
- Place the circular saw on one side of the straight edge and cut the excess plywood.
- Flip the board and repeat on the other side of the circular saw.
Tom used scrap plywood and extra wood glue, but these items could also be bought at a home center.