Yet Another Dirty Clean Sign
thingiverse
The dirty clean signs that I saw here did not have the right size for the magnets that I use, so I just designed my own. I also uploaded the step file, so it should be fairly easy to modify that if you want to use different sized magnets. You will just need to "move face" on the inner surface of the magnet holes.
Download Model from thingiverse
With this file you will be able to print Yet Another Dirty Clean Sign 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 Yet Another Dirty Clean Sign.