Making Auto Pulley:
Get an old wheel from a bicycle.
Remove the tire from the wheel.
Bend a coat hanger into a U shape that extends from the axle on one side of the wheel, around the outside of the wheel and to the other axle. The U should leave a 3-inch gap at the rim, and 4 inches of extra wire at each axle by which to attach it.
Use pliers to wrap the ends of the coat hanger tightly around the axles. Make sure the wheel is still able to spin.
Use the pliers to twist a loop into the gap of wire at the rim.
