Frisbee toroidal
youmagine
In comparison to the Frisbee I posted at: https://www.youmagine.com/designs/frisbee, this one stays in flight longer. I think it's because the air that is left underneath takes time to get out above. It can only do so from below, which creates a thrust on the Frisbee upwards.
Download Model from youmagine
With this file you will be able to print Frisbee toroidal with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Frisbee toroidal.