Anet A8 top spool holder

I searched a top holder for my Anet A8, because I use my old computer desk and the Anet A8 fits perfectly, but not the original spool holder. I was inpired by this https://www.thingiverse.com/thing:1832235 MK2 spool holder, that not fits on my Anet A8 printer. I constructed the new holder with OpenSCAD. Threaded rods or screws are not needed.