Knotted Orbit

I decided to branch out and try designing something for a full color powder printer. The STL really doesn't do it justice; if you have Windows 8.1 (or 10), you can open the 3MF with [3D Builder](http://www.aka.ms/3dbuilder), which I work on.

I used NASA images: the Blue Marble for the earth, and the Hubble Deep Field for the knot. The earth is forever captured, but can roll around a knot-shaped orbit. See my [video](http://youtu.be/2CwHJqwzj3A) of the finished print.

One of the cool features we added to 3D Builder is "Buy Print", which allows you to make things in materials we can't manage at home. I printed this in Colorstone for $172 (I know, not as cheap as we'd like, but pretty good for a 6 inch wide piece).