ON AIR sign
thingiverse
I desgined an on air sign to for example warn housemates on the outside that you have a meeting. For best effect, sand a piece of plexiglass and place it in the box. Then, add a (red) led strip on the inside for illumination. I placed a flip switch next to my desk to turn it on and off.
Download Model from thingiverse
With this file you will be able to print ON AIR 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 ON AIR sign.