A new 3D printing method called CRAFT (Lithographic Control of Crystallinity in Additive Manufacturing of Thermoplastics) uses a commercial printer to convert the commonly available liquid cycloacetene resin into a solid plastic object.[1] The process involves projecting a series of grayscale images onto a platform that moves up and down in a liquid, building an object from microscopically thin 2D layers of polymeric material.[1] The method enables the control of molecular order in three-dimensional space by changing the intensity of light, which changes the mechanical and optical properties of the material.[1] CRAFT creates models without the disadvantages of traditional methods and uses a simple, inexpensive resin.[1] Potential applications include energy absorption for sound insulation or protective equipment such as helmets, as well as bio-inspired materials with alternating hard and soft areas for vibration and shock absorption.[1] Objects made by CRAFT are not fully recyclable, but can be melted or dissolved with a solvent and poured into a new form.[1] The study is published in Science, Volume 391, Issue 6784, Pages 511-516, January 2026.[1]