A very talented guy named Tom Sofer, replied to my post at facebook’s Keerbot group showing his last creation.
Tom says:”As a publicity project for the new makerspace “XLN Haifa” I started working on my own implementation for the Drawbot polar-graph robot.
I designed my own carriage to fit “expo” style whiteboard markers, which are relatively heavy and tend to point upwards, so it needs a big counterweight which will not erase the markings.
Next step is to design a new carriage with servo mount and implement pen up/down.”
seems very impressive, what do you think ?