Spinning Toy, Dolphins

cults3d

My rendition of yet another very old, and very simple, children's toy. Sure there is the possibility of potential, kinetic, and mass inertia energy involved (try it with just the axle), and as such, there must certainly be some sort of physics lesson that can be derived from somewhere in this thing. But most importantly, the grandkids love it, which is why I made it. Video of prototype is here: https://www.youtube.com/watch?v=5gkM4ybjZo4. Designed using Sketchup Make 2015, and printed in PLA on a Makerbot Replicator 2 using Makerware 2.3.3.42 "Standard" Settings (.2mm layer height, 2 shells, 10% infill).