Ok this doesn't seem bad. The one in that post is done via a resin 3d printer and I just have 2 FDMs so I can't promise the level of smoothness they got, but I am printing a quick prototype of it now and if it comes out well I would be willing to make you one with any of the colors I have on hand right now. I have 2 printers so why don't you link the other file here as well and i'll do a test print of that as well.