Acceleration Lab Re-mixed

This is a remake of my Acceleration Lab Apparatus. I was never fully satisfied with it. When I saw this cool CD Spinning Top I knew I could improve my apparatus by grabbing the screw together bits.

I've made two versions. One version requires a CD for the disk while the other has the same printed disk I used previously. The CD version requires less than 5 g of plastic to make. I made a whole lab set in one 2 hour run. Much more efficient.