How to Build a Pipe Ball Lawn Game

Lay the base flat, and sandwich it between the walls, set on edge with their bevels parallel. Use a straightedge to ensure the bevels are in line. At the nonbeveled end of the assembly, mark each of the walls flush with the butt of the base and cut them to length. This way, you can use one side of the jig for angled cuts, and the other side to guide straight cuts. Attach the pieces together by screwing through the sides and into the edges of the base.