Additionally, incorporating ionic liquids may allow the resins to be electrically conductive, resulting in soft, stretchable, and conductive elastomers . Together with the low cost of raw chemicals and extreme mechanical properties, our modular elastomer resins provide a new class of soft and stretchable materials for high-fidelity additive manufacturing of functional structures and devices. and). (c) Photos of the printed elastomer with 0.3% crosslinker stretched to strains of 0 (upper) and 13.5 (lower).