Freakin' Sweet Knots

I found this cool little app that allows you to create Turk's head knot rings with no CAD modeling experience at all. The textures are already generated, all the app does is input your ring size and desired height and then sends the information to Shapeways for a quick and cheap print. This is cool for convenience, but the fact that you can't get the STL files when all is said and done is a bit discouraging. But the rings are definitely cool, and at 3 bucks, it'd make a cheap, but sweet gift for a loved one.
Maybe I'm wrong though, is there anyway to get STL files from Shapeways? I'm thinking no, but who knows...

Here's the ring I made!

Printed ring, looks beautiful.

Here's the website: http://knots.freakinsweetapps.com/