Alaskaeis Ah, I see. Thanks a lot for fixing it! :)
Alaskaeis@mz4250 I'm just downloading Cura right now for my Octoprinter :-) I'll try that, thanks!
Alaskaeis I tried this one with Slic3r and Meshmixer and they both reported a non-manifold object, resulting in a non-solid print (i.e. it printed just as a very thin "hull") ... :-(