I can see how this would be perfect for making control panels with labeled lights and switches. The K40 is a cheap laser engraver/cutter. However, it is very capable, even when used unmodified.

The inexpensive Chinese K40 laser cutter has become the staple of many a small workshop within our community, providing a not-very-large and not-very-powerful cutter for a not-very-high price.

The installation of the Laser Defuser was a bit more difficult and reminded me why K40 likes these things to be installed by a pro. Unfortunately my license plate holder isn't removable ...