Rheology has established itself as a powerful method to assess and predict printability of bioinks for extrusion-based printing, while benefiting from minimal material consumption . The rheological benchmarks for bioink printability were established through oscillatory and rotational rheology of 22 °C GelMA precursor hydrogels, which served as the basis for the development of printable GelMA/bPE formulations. GelMA solutions with concentrations between 5 wt% and 10 wt% when cooled near their gelling temperature are typically considered to lie within the "bioprintability window" and are commonly used for 3D bioprinting. While lower GelMA concentration formulations suffer from poor structural stability after photocrosslinking, higher GelMA concentrations limit the available space for cell encapsulation and spreading .