CODE IN CLAY
Procedural ceramics straight from the printer
Potters used to throw with hands and a wheel. Now they throw with algorithms. A strand of soft clay—pushed through a nozzle the way icing leaves a piping bag—lays coils that stack into vessels, lattices and shells no hand could keep steady. The method has names in the lab (direct-ink writing, liquid-deposition modelling), but in the studio it feels simpler: code becomes gesture; clay remembers. ScienceDirect
The pioneers didn’t wait for perfect machines. Dutch designer Olivier van Herpt spent years hacking his own rig to print medium and large functional pieces—work that can survive firing, hold heat and sit on a dinner table rather than a plinth. His process treats the printer less like a black box and more like a musical instrument: tuned to material viscosity, layer height, and the slow rhythm of drying. Olivier van HerptYouTube In Antwerp, Unfold pushed a parallel idea: open up the tool and the aesthetics will follow. Their public notes on ceramic 3D printing read like a manifesto—the tool shapes the form, so let artists shape the tool. UnfoldUnfold
If code is the hand, G-code is the handwriting. Oakland’s Emerging Objects makes that literal: GCODE.Clay exposes the path itself as ornament—porcelain and terracotta lines that ripple because the machine’s logic ripples. What used to be hidden “machine chatter” becomes the piece’s signature. emergingobjects.com Meanwhile Jonathan Keep writes pots from scratch as algorithms—randomness fenced in by rules—then publishes a practical guide that demystifies clay bodies, shrinkage and the gentle tyranny of firing curves. Keep Art+1
The hardware has matured without losing its DIY soul. Syringe-fed systems from 3D Potter give studio-scale reliability (and a price tag a small lab can handle), while WASP’s clay printers stretch to taller forms and denser pastes; both speak fluent G-code, so Grasshopper, Processing or Python can sketch the part and the nozzle can hum it into being. 3D Potter+13dwasp.com+1 On the research side, six-axis robots now print non-planar ribbons of earth and ceramic, bending toolpaths into space the way a calligrapher lifts a brush. The result isn’t just new geometry; it changes strength, drying behaviour and the way a glaze breaks on an edge. MDPIKUKA AG
Material science is the quiet co-author. Clay bodies for printing must shear-thin (flow under pressure, then hold a shape), survive water loss without slumping, and shrink predictably in the kiln. Additives—porcelain fines, grog, fibres—tune that behaviour, and a growing DIW literature is mapping which recipes print cleanly and fire sound. The practical upshot is fewer collapsed spirals on the workbench and more pieces that make it through the kiln as designed. ScienceDirect
And the stakes are no longer just sculptural. Start-ups are testing disposable-but-earthbound clay cups in cafés; others prototype acoustic tiles and thermal mass components, exploiting the way printed clay can pack complexity into thin shells while remaining infinitely recyclable before firing. Code gives you local production on demand; clay returns you to a material stream cities already understand. WIRED
What’s next feels less like higher resolution and more like richer motion: multi-material nozzles that braid colour and texture mid-spiral; feedback systems that listen to the coil and nudge pressure in real time; robotic wrists that draw off-axis so a vessel’s “grain” records a twist you can feel with your thumb. Somewhere between craft and computation, the printer stops imitating the wheel and becomes its own kind of hand.

