To evaluate the self-healing of the developed hydrogels after extrusion, all components were mixed together and kept in the syringe mixing system for 48 h at room temperature (r.t) for the crosslinking reaction to proceed. Afterwards, the formed hydrogel was extruded (Figure ) onto a glass slide and incubated in the mold for 24 h at r.t (Figure ). Then, the hydrogel was demolded and incubated in PBS for 3 days at r.t (Figure ) followed by rheology amplitude-sweep to determine the modulus and linear viscoelastic region of the reformed hydrogel (Figure ). In a parallel experiment the extruded hydrogel as described in Figure was subjected to rheology time-sweep for the assessment of rate of regelation (Figure ). The extruded hydrogels were reformed without needing any external trigger resulting in a homogeneous hydrogel that could be picked up by a spatula (Figure ). To further quantitatively assess the self-healing of the extruded hydrogels, oscillatory amplitude sweeps were performed and compared side-by-side with original hydrogels (Figure ). To our surprise, no statistically significant differences could be observed between original and reformed samples in terms of storage and loss moduli (Figure ) and the graph of G´ vs oscillation strain was found to be nearly identical for both original and reformed hydrogels (Figure ). This had led us to conclude that the self-healing is quantitative in terms of stiffness, indicated by G´, and linear viscoelastic region, indicated by the G´ vs oscillation strain graph. Moreover, time-sweep rheology revealed that the rate of re-gelation of the extruded hydrogels were nearly identical to that of the original hydrogel (Figure ). To our understanding, the shear force during extrusion acted as a trigger for the cyclo-reversion of the furan-maleimide cycloadduct and resulted in the shearthinning behavior of this hydrogel (Figure ). However, after extrusion when the hydrogel was at rest and no stress was applied (Figure ), the furan and the maleimide functional groups could slowly react resulting in the observed self-healing (Figure ). Notably, the near-identical initial rate of gelation for the original and the extruded hydrogels further indicate towards force-induced cyclo-reversion of the furan-maleimide cycloadduct, as similar rate of gelation could not have been otherwise explained by considering a reaction between unreacted furan and maleimide groups from the first-time reaction during hydrogel formation.