Chained Horseshoe Puzzle

Here's a cool design I did in 3 hours last night, a rare to find puzzle where you need to free the ring from the chained horseshoes. It's quite simple when you finally find the solution but rty not to google it.. If you succeed it means you're bright and that makes you lucky in life ;) I designed this to put it on Shapeways https://www.shapeways.com/product/5FXHVZ263/horseshoe-puzzle
so I didn't bother with supports and FDM printability because they use powder based printers where there's no need for supports but there are some dimension guidelines to respect. You can try printing it by generating proper supports or order online. Smaller Metal version on the way...
Here's the link to the original SketchUp model,
https://3dwarehouse.sketchup.com/model.html?id=u92d206bc-866d-4039-be94-5cda328af818
use it to place the parts in the optimal orientation and setup for your 3D printer, and to customize it how you please. I'll upload multi-color (stl) versions soon