Vex material sorter piece

Design for a printed piece to drop one marble at a time for PLTW material sorter. Connected to a servo, works very well. See it in action: https://www.youtube.com/watch?v=Ueql7RzjQGU

Updated parts, the ones called designdropper. Edited the first design to better fit the marbles and a bigger opening for the shaft. The second design can turn in a full circle to drop a marble, letting you use a motor instead of a servo.