Rheological measurements of the resins were performed on a modular photo-rheometer MCR 302 (Anton Paar) using a parallel plate with 20 mm diameter. To mimic the volumetric printing conditions, the temperature was set to 4 °C. During time sweep measurements with an interval of 6 s for 5 min, UV curing of the resins was induced after 60 s by illumination with an UV-LED lamp (Thorlabs, λ = 365 nm, light intensity = 10 mW cm -2 ) with 45 μL of resin and the gap set to 0.1 mm. The storage moduli (G') and loss moduli (G") were recorded to assess the crosslinking ability and terminal stiffness of the used resins. To prevent drying, wet tissue paper was placed within the temperature chamber.