Plotter Converter
thingiverse
Use this to use your 3D printer as a pen/pencil/marker plotter. Use Pen springs as shown in pictures.
Download Model from thingiverse
With this file you will be able to print Plotter Converter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Plotter Converter.