One advantage of a drawing machine working with coordinates is that it does not need to see what it draws.
Under the blue light
I bought a fountain pen with a refillable cartridge, and some UV ink.
The UV ink is invisible to the naked eye but the pen did leave trails on the paper.
Years in the making, many prototypes, and I hope a software stack which brings novelty and ease of use to the world of pen plotting. It’s been a marathon building the final version and documenting the process carefully. I’m too pooped to say anything more about it for now.
