A study published on the Advanced Materials journal presented the first report of volumetric additive manufacturing of thiol‐ene photoresins, combining the benefits from two high-potential areas in AM and material science. The study expands the versatility of volumetric AM by introducing a new class of VAM‐compatible thiol‐ene resins and demonstrating the superior quality of these materials and – by extension – the advantages of the layerless volumetric process. VAM prints were performed in a custom printer setup equipped with a 405 nm LED light engine, with a maximum intensity of 55 mW cm−2, illuminating a resin vial fixtured to a rotation mount. Importantly, this work also established the first comprehensive framework for spatial-temporal control over volumetric energy distribution, demonstrating structures 3D printed in thiol‐ene resin by means of tomographic volumetric VAM. Emerged recently, volumetric additive manufacturing processes form complete 3D objects in a single photocuring operation, from tomographic data, without layering defects, enabling 3D printed polymer parts with mechanical properties similar to their bulk material counterparts. VAM could also lead to a broadening of the materials available for photopolymer 3D printing, having fewer constraints on viscosity and reactivity compared to layered 3D printing. Printing parts in a single step from tomographic data overcomes many of the drawbacks of layer‐based fabrication, such as long build times and rough surfaces. In other words, this study shows that not only volumetric 3D printing can be achieved – dramatically accelerating the build speed and improving on part properties by eliminating layers, but that using thiol-ene based chemistry it can open the door to a broader range of material possibilities.
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