Wood Pellet Tags
thingiverse
Got to give props to Jepod for the original here: https://www.thingiverse.com/thing:3637021/files. I just switched it up a little to make it easier to read. The cutouts in back were created for 6mm X 5mm earth magnets. I did a fast print with a layer height of .3. If your default is .2, the magnets might be a little loose. You could always glue them in though. If there is one you need and I don't have, I can create and add to my files.
Download Model from thingiverse
With this file you will be able to print Wood Pellet Tags 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 Wood Pellet Tags.