Why I built a robot that paints

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People assume the robot is the art. It isn't. The robot is a very patient hand.

The problem with hands

Every line I drew myself had a wobble in it somewhere — a heartbeat, a breath, a moment of doubt at the 40-centimeter mark. For most drawing that wobble is the point. For the work I wanted to make, it was noise. I wanted strokes a meter and a half long with the confidence of a printed circuit and the color of wet paint.

So: a gantry, some belts, and a pen

The plotter started as aluminum extrusion on a kitchen table. The current machine is the fourth rebuild: a 1.2 × 1.8 m gantry, custom pen holders that hold real acrylic markers instead of fineliners, and firmware tuned so the pen accelerates the way a hand does — fast through the middle of a stroke, gentle at the ends.

What stays human

I write the systems that generate every toolpath. I choose the pens, mix the colors, decide when a piece is finished or when it goes in the bin. The machine contributes the one thing I can't: ten straight hours of a perfectly steady hand. The collaboration is the work.