About this 3D model

A friend of mine sent me this YouTube video link - http://youtu.be/cl5ZVvTI6qk - where they had this demo model all printed in one go on their 3D printer. I watched the video a few times and converted it to a CAD model for our UP! Plus 3D printer. It's a very fun toy to play with, and good example of how 3D printers can make things that no other machines can make. :)