How to Add a Laser Engraver to Your 3D Printer - Instructables
Step 1: Connect the Laser to the Power Supply.. This will be specific to your printer.. You will need to open the control box (plenty of videos on Youtube for various printers) and add connections for +12v and ground.. If you have an Ender 24 volt printer, you can see how to add a 12 volt circuit here..