Sign to hang up if you have a laser wich is running and you want to warn about it 

Print the Mount and glue it to a surface (nearly every other hook can be used too)

change filament manualy after 2mm height to black or if you have the Centauri Carbon use the premade file for it

(spliting at 2mm possible too but elaborate due to the letters)

Mount is the same as with the exam sign

Signs can be stacked on the mount

Files with “CC” are sliced for the Elegoo Centauri Carbon