GelMA-CBP inks were made to determine the influence of both components on the storage and loss moduli of the crosslinked materials. Our data showed that the values of G' and G" directly correlated with the concentration of GelMA and CBP (Figures ). Changing the GelMA concentration from 3% to 7%, while keeping the CBP concentration at 0.25% allowed tuning the mechanical properties of the crosslinked hydrogels across an order of magnitude, from G' values of 410 ± 50 to 4700 ± 600 Pa, respectively (Figure ). These G' values show that it is possible to bioprint constructs from GelMA-CBP bioinks capable of mimicking the mechanical properties of a range of soft tissues (e.g., brain, or lung). In addition, we observed that G' and G" values plateaued, showing no statistically significant differences, for pucks made from inks containing 5% GelMA and CBP concentrations > 0.1% (Figure ). However, when CBP was absent, the G' value was almost half that of the samples containing CBP, and the differences were statistically significant. We further compared the G' and G" of the crosslinked materials at 22 and 37 ºC (Supplementary Information, Figure ), and observed no statistically significant differences between values, indicating a full crosslinking of GelMA under the experimental conditions used.