The ramp is elevated by a support framework made from strips of 1 × 2 pine board which is attached to a 1 × 6 pine base. The different settings are made by attaching 5/8" diameter wood dowels to the support framework. In this particular ramp, the dowels are spaced 5 centimeters apart. The ramp itself is made from a 4 foot long sheet of oak or poplar plywood. The smoothness of the plywood is the primary consideration when choosing a sheet from the hardware store. Two additional 1 × 2 pine boards are attached to the plywood ramp surface. These boards prevent the plywood from bowing as well act as barriers that prevents whatever object is travelling down the ramp from falling off the side. The ramp attaches to the support framework by means of two #6 screw hooks which are inserted into the ends of the ramp's 1 × 2 pine boards.