Polysynth’s multimaterial resin printer aims to bring multi-material printing to SLA machines, and it does it with an unusual twist: the build platform spins between up to eight resin vats to fling off uncured material before the next dip. Resin printers have mostly stayed in the single-color lane, but Polysynth wants to change that with a system built for switching materials during a single print.
The setup sounds like the kind of idea that comes from a lab notebook or a dare. In this case, it is apparently a bit of both, with a kinematic lock and servo mechanism returning the build platform to the exact orientation it started from after each spin. The company has not put the machine on sale yet, so for now the payoff is a demo and a promise, not a spec sheet you can click ”buy” on.
How the spinning resin system works
The basic architecture is simple enough: instead of one tank under the build plate, Polysynth’s printer uses a carousel of small circular vats. That lets it alternate materials during a single print, which is the whole point of the exercise. The tricky part is preventing one resin from contaminating the next, and the company’s answer is centrifugal force rather than a separate wash station that would slow everything down.
- Up to eight small resin tanks
- Spin cycle to remove uncured resin between dips
- Kinematic linkage and servo to restore alignment precisely
Conductive resin could enable printed PCBs
The more intriguing part is not the carousel, though. Polysynth also showed a conductive resin that could be used for fully printed, multilayer PCBs. That is the sort of feature that makes hardware people sit up, because it points beyond novelty objects and toward parts that might actually save time for prototyping and short runs.
It is still a long way from replacing traditional fabrication in volume, and nobody serious should pretend otherwise. But for fast turnaround, especially when you do not want to wait on parts from overseas, conductive resin could carve out a niche. Dental work is another obvious candidate, with gums and teeth for dentures potentially printed in one solid go.
Polysynth resin printer is not on sale yet
Buyers cannot get one yet. This is still an early commercial product, and anyone hoping to build a similar machine would be starting from scratch. That may sound familiar to anyone who remembers the era when home resin printers were mostly DIY projects, which makes Polysynth feel less like a finished product and more like a signpost for where desktop resin printing could head next.
The real question is whether the spin-and-swivel routine stays elegant once it meets everyday use. If Polysynth can keep the alignment tight and the workflow reliable, this could be the rare resin printer that earns its complexity. If not, it will join the long list of clever prototypes that were impressive for exactly one demo.