Counter-Sinking Hexagonal Holes

Cool – you can laser-etch hexagonal bolt-holes 1/2 way through acrylic sheets by repeatedly rastar-etching slowish speed, highish power… on my machine (little 60W machine) speed=100, power=70 – 2 passes. Not particularly fast (each one takes about 4 minutes)… but it allows you to do the formerly impossible… each time identical to the last.

For circular holes, I’ve found it’s a hell of a lot faster to cut a dense spiral than it is to etch a circle.

In other news, I just made this: