This pen plotter pen holder attatchment is designed to work with the Creality CR-10(It may work with some other Creality printers)
It is design to not be too ridged so the pen can be pressed securely against the build plate!
Simply remove the print head nozzle from the CR-10, and use the two screws that were used to fasten the nozzle, to attach the pen holder to the same spot the nozzle was attached! One of the short screws that was used to attach the nozzle cover case can be use as a set screw to secure the pen!