rattleback 3d models

More on wikipedia: http://en.wikipedia.org/wiki/Rattleback Uploaded at the request of Spacexula Instructions You can print one or both files. They are mirror images and differ only in the direction of preferred spin. Print out with a heavy...

This ancient curiosity spins one way easily, but refuses to spin the other way! ...Watch it instead rattle and start to spin back the other way!

this is the rattle back toy that i created, it is by physics that it works. ... I hope you all enjoy playing with it!

This ancient curiosity spins one way easily, but refuses to spin the other way! Watch it instead rattle and start to spin back the other way! (Before I realized that the key to getting jaysay's excellent design to work was a gentle sanding, I spent a...

A minimum of two M8 nuts are required. An M4 bolt is screwed into the center. ... M4 nuts are glued onto the weight.

Simple mold made to build a rattleback with a denser material (like epoxy resin).

The rotation about the vertical axis ceases and sometimes the rattleback then starts to spin in the opposite direction! The physics is complicated. You can see that the mass of each half is offset from the centre line. In essence, the energy for the...

Demo video at http://mysd300.blogspot.com/2010/12/rattleback-twins.html Instructions These models differ from jasay's mesh in the following ways: The Z-axis height has been scaled down by 45%. (jasay has posted a comparable model) The base of the...

... and left. Print Settings Printer Brand: MakerGear Printer: M2 Rafts: No Supports: No Infill: 100% Notes: The Infill has to be 100% for the rattleback to work really well. ...Resolution is unimportant since you have to use sandpaper anyway.

The rattleback exhibits very interesting rotational dynamics due to its mass distribution which has implications on its product of inertia. Read more about it: https://en.wikipedia.org/wiki/Rattleback These prints need to be sanded well to work. I...

Link to his documentation

Alias rattleback filling 100%

This is a celt or rattleback - an object that in spite of its simplicity has a preferred direction of rotation when you spin it on a table. Spin it the wrong way and it slows, starts rocking, and often starts spinning the right way. A demonstration:...

This is a celt or rattleback - an object that in spite of its simplicity has a preferred direction of rotation when you spin it on a table. Spin it the wrong way and it slows, starts rocking, and often starts spinning the right way.</p> <p>A...