Pencil CD Hub

This thing, allows you to use a pencil as an axle and a CD as a wheel for just about any project. We designed it for use with a gearhead motor to create a clothesline runner, (not as fast as a racer). It was used by teachers to see how a 3D printer can help them to make objects to create a more engaging activity for their students.

This thing also makes a great spinning top.