Plastic Pal Printer Tag
thingiverse
It's a nametag for your printer. You can slide it into a 20x20 rail, it should fit, it won't be super tight, but it won't be super loose. You can do a 2 color print, or do what I did and use a foam brush with black paint to gently mark the tops of the letters.
Download Model from thingiverse
With this file you will be able to print Plastic Pal Printer Tag 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 Plastic Pal Printer Tag.