Hi, I'd like to use this to import to TinkerCAD for 3D-printing a bannertop (we're doing the Equestrian Banner for meetups and the Crystal Fair in Finland next year). I'll send you pictures if/when we're done!
Good to have two versions! The reason mine is not perfectly symmetrical is because Celestia's is not perfectly symmetrical. It (like the others) is a direct copy from one of the source flash files. But again, it is good to have a symmetrical version as well!
I wonder how many people will think that it is symmetrical as in fold in half symmetrical. I will admit that that is what went through my mind first when I saw it. Radial symmetry is so underused in the math books at school, even in geometry.