Zentangle bracelet

I wrote a program which turns a square model into a cylinder. This is just a demo. It turned he model generated by [Symmetrical triangle generator](https://www.thingiverse.com/thing:1213278) into a cylinder. I made it a bracelet because my daughter loves it :)

Generating a preview takes a little bit longer (but rendering a model doesn't take too much time). Because of the browser security concern, using the [Customizer](http://www.thingiverse.com/apps/customizer/run?thing_id=1562673) may bring a message "script timed out". Even you can't preview, you may still use the Customizer to generate a model.

If you really want to preview, download the .scad file and use [OpenSCAD](http://www.openscad.org/) directly or find a way to extend your browser's script timeout.

You may customize the zentangle on the bracelet in [Generalized zentangle bracelet](http://www.thingiverse.com/thing:1569263).

[![Generalized zentangle bracelet](http://thingiverse-production-new.s3.amazonaws.com/ren