Has anyone used their K40 or similar cutter to make tools for astronomy? I have enjoyed the hobby/obsession of amateur astronomy for a couple decades now and just realized that there may be some instances where I can make tools or things to assist with the hobby. I saw a post on CloudyNights about making a Tri-Bahtinov mask. That is a great use. I also think that making aperture masks out of thin ply might be a good application.
I have two middle schoolers that I am currently leading through Astronomy lessons. I want to find some educational applications of the K40 with regard to the topic of astronomy as well.