Thank you! As for my 3d printer, it's actually a funny story:

I personally own a Monoprice Maker Select V2, but I also have a membership at a local makerspace that grants me access to larger rigs: A Lulzbot TAZ 5 and a CubeX Trio. I like to run all of them at once to make my builds faster when I have multiple parts :) And I like those pens! I don't have one myself, but I've seen people make some very cool sculptures with them. Gives the prints more of an expressive, free-form appearance I think.