Now glue the motor and laser mount centered together on the cardboard. Now all you have to do hook up the power for the motor. I would suggest two AA's with a switch so it is easy to turn off and on. This makes the motor move plenty fast enough to create wonderful circles of laser light. I do not suggest using an higher power as it tends to make it vibrate too much and the mirror can possibly fly off creating a dangerous situation. Only one more step and you are done!