[romwell]

FWIW, every 3D printer is also a pen plotter (just stick a pen to your print head!).

Here's my old faithful Printrbot plotting a dragon curve:

Fountain pen, timelapse: https://www.instagram.com/p/BlQHk43gwra/

Fountain pen, final image: https://www.instagram.com/p/BlJHawZgFi1/

Ballpoint, realtime: https://www.instagram.com/p/BlJ8dgmAaTA/

[aallen90]

That's awesome! What print speed did you use? (your steppers sounded like it was very high) And do you slice 1st layer normally?

[romwell]

Thanks! I didn't use a slicer, went straight into G-code for that one (wrote a program that generates the G-code for the dragon curve: a sequence of G0 commands).

Don't remember what the feedrate was; with the pen attached tight, I could go pretty fast.