Infinity Mirror for Feather boards
thingiverse
This is the Infinity Mirror adapted to feather boards by Adafruit. My acrylic discs measure 4mm in thickness so the space is designed for those ("Top Ring.stl" file). If you are using 3mm thick discs, you should utilize the files provided by Adafruit (you really just need the "PCB Case Bottom.stl" file from there).
Download Model from thingiverse
With this file you will be able to print Infinity Mirror for Feather boards 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 Infinity Mirror for Feather boards.