How to make a Plotter of an old printer

This is an old IBM printer. It's easy to make a plotter of a  printer. You must replace the printer head and the backside of the printer is the underside of the plotter. I hope you can see on the pictures how to make a plotter head for 1, 2, 3 or 4 pens.
The pens plot on the paper with his own weight.

picture plotter of an old printer picture plotter of an old printer
picture plotter of an old printer
picture plotter of an old printer
picture plotter of an old printer

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one ( 1800*1200 ) 440kb