Printing in progress sign
thingiverse
When you are printing something put this sign in front of your printer so no one shuts it off. Very useful.
Download Model from thingiverse
With this file you will be able to print Printing in progress 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 Printing in progress sign.