Gram Circle
thingiverse
I apologize for the poor lighting quality in the dark picture. This creation was designed using Tinkercad, and you can edit it directly on their website: https://www.tinkercad.com/things/78F8OpEghHa.
Download Model from thingiverse
With this file you will be able to print Gram Circle 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 Gram Circle.