I recently put LED strip lights under the cabinets in the kitchen, and had a few left over. They are pretty basic white 12v LED lights, similar to the ones you see here. While milling a circuit board the other day, I found myself using a flashlight to see how things were progressing. It was also hard to photograph the process, so I thought I would install some lights. Pretty straightforward process. The strips are made of small segments which can be cut off the roll. I cut 4 sections off, and arranged them in a square. Soldered the corners up and left a longer lead which would go through my cable raceway to the computer running the show.
The LED’s I had are backed with a 3m adhesive, so mounting them under my z-axis was pretty easy. Peel and stick!
From there, I opened up the computer case and cut the leads off one of the molex connectors. The power things like cdroms/hard drives, and contain both a 5v(red) and 12v(yellow) power source. I connected the Leds up to the 12v, and now whenever the computer is on the LEDs light up the work piece.