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.

This is a really clever mod for the K40 laser, and requires relatively little in the way of hardware. It might even be able to be done with leftovers from expanding a K40 out to a much bigger ...

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 ...