This video demonstrates that the rings in this design spin easily, with no assembly. See Cults3D, https://cults3d.com/en/3d-model/gadge... for the STL and FreeCAD files, and a bit more description of how I created these rings.
Watch video Nested Rings that print in place online without registration, duration hours minute second in high quality. This video was added by user Bradford Needham 29 August 2023, don't forget to share it with your friends and acquaintances, it has been viewed on our site 23 once and liked it people.