Pen Plotter

Why using a pen plotter ? I see database's elements like starting points only. A pen plotter is therefore a way to reproduce my drawings with the same medium and to extend existing lines with the same pen or ink. As a result, I can rearrange them in the space and compose new complexes.

6 drawings mechanically plotted and manually augmented.
Array of elements plotted with a ball pen (outlines).
Composition mechanically plotted with a brush pen at different pressures.