We envisage that PEG-based biodegradable hydrogels may also be obtained by heat-assisted DLP using various PEG-polyester block photopolymers which would provide even stronger mechanical properties. Moreover, the 3D printed PEG hydrogels may be further toughened by introducing a secondary network post-printing, depending on the specific application. In principle most photocrosslinkable synthetic or natural polymers with a suitable meting point (e.g., 40-70 °C) would be suitable for hydrogel fabrication using heat-assisted DLP, which may greatly expand the scope of hydrogel additive manufacturing. Our approach brings new perspectives for the high-resolution 3D printing of geometrically complex PEG hydrogels, which may advance the fabrication of personalized bioactive scaffolds and medical implants.