Things You'll Need
Instructions
Cut a 1 1/2-inch segment off the end of the paper towel roll. This will be the yo-yo's axle.
Cut the axle to create two 3/8-inch deep slots on each end of the axle so that the axle now has two 1 1/2-inch tabs that will insert into the paper plates.
Position the axle at the center of a paper plate. With the marker, draw two arcs where the tabs touch the plate. Repeat this process on the other paper plate.
Cut each paper plate to create slots on the markings where the tabs were touching the plates.
Using the pin, punch a hole at the midpoint of the axle. Thread the string through the hole, then tie a knot at the end of the string to fasten the string in place.
Insert the axle's slots into the tabs on one of the plates. Apply glue to reinforce the connection.
Insert the marble or the taped-together coins inside the axle to add mass to the center of the yo-yo.
Insert the tabs on the other end of the axle into the paper plate. Apply glue to reinforce the connection.
Tie a slip knot at the end of the string that's not attached to the axle. Slip the string around your middle finger, wind up the yo-yo and begin practicing. The yo-yo will not "rest" but can still make an up and down motion, offering good practice for beginners.