This started as a "fun" practice model and turned out to be an ok test for inclines and edge supports. It's a pretty torturous print as far as getting the inner edges to look pretty.
I plan on using it to play around with support settings for better quality outcomes and easier removal, but in many cases the print should at least finish with no supports (though it will be very ugly). Adding supports to just the low angles will make it passable in some cases. Adding supports between the inner and outer beams as well will obviously give the best results, but support removal and placement is still challenging.
Please experiment and share your results!
The author hasn't provided the model origin yet.