Prior to using any industrial machinery it is crucial to ensure all machinery is functioning properly and set to right specifications. In this photo, i was setting the drill press up and then drilling the holes into the support pieces needed. Also, this machine can used to mill down the acrylic pieces if the measurements were not as precise. Prior to drilling measure the diameter of the LED with the micrometer if diameter is unknown. Take that measurement and find the correct drill bit that matches that measurement. Be sure that the drill bit diameter is slightly smaller than desired to ensure a snug fit for the LED.