MIT Researchers Find a Way to Reuse Resin 3D Printing Supports

In resin 3D printing, support structures make it possible to produce complex geometries, overhangs, and very thin features that would otherwise collapse during printing. However, they also increase material consumption, require manual removal that can leave marks on the part’s surface, and can even cause damage if not handled with care. Furthermore, once removed, the supports are discarded and cannot be reused.

A team of researchers at the Massachusetts Institute of Technology (MIT) believes it has found a way to reduce these drawbacks. In a study published in Additive Manufacturing Letters, the scientists present a new process that allows the same supports to be reused across multiple prints. Instead of manufacturing and discarding the supports with each part, the system keeps them virtually intact thanks to a thin layer of water-soluble resin that acts as a separation point between the support and the final part.

The process used by the MIT interface to reuse supports in resin 3D printing.

How Does the System Work?

The process begins with a set of prefabricated supports tailored to a specific part. Once manufactured, these are mounted on the print bed using a kinematic coupling system: a high-precision mechanism that ensures they are always positioned in the same place.