The original file was difficult to open by most of the 3D printing software, so I rebuilt it and also cut a little flat plane at the bottom of it, which can be easier to print.
With FLUX Delta 3D printer, it can be printed without support and rafts. However it's suggested to turn on both of them while printing with other kinds of printers.
The Mobius0328.stl is reduced which make its file smaller, but if you are not going to print it really large, there won't be any difference to the larger one.
The one shown in the image I had scaled it up to 200%.