(I gave away my A3 color printer to my daughter because my Grand Children had to study at home because of Coronavirus Lockdown and needed to print out lessons from Internet.)
So I made a pen holder to use the MACH3 powered CNC router to plot color drawings and pictures.
This Easy Mount Pen holder is made compatible to OFF supermarket BIC Atlantis ball point pens and the Sharpie Ultra Fine (0.3mm) color Permanent markers - for low running cost.
Reuel