Better focus setting for the laser cutter

The focus stick for the laser cutter (the purple stick that we’ve been using for ages) has been discovered to not be quite the right size.

On top of the laser cutter, you’ll find a ring of white sticks of various sizes. One of the sticks has a YELLOW end painted on it. We’ve figured out that the yellow stick produces the best results.

Go forth and laser with a smaller dot.