Whether you’re optimizing your manufacturing process, rapidly iterating through designs, or assessing form, fit, and function, Formlabs Engineering Resins are formulated to withstand extensive testing and perform under stress.
 
Tough 1500 Resin is a resilient, skin-safe material that offers similar strength and stiffness to polypropylene (PP). Choose Tough 1500 Resin for stiff and pliable parts that bend and spring back quickly, prototypes that repeatedly bend and quickly return to shape, and jigs and fixtures requiring repeated deflection
 
Prototypes that repeatedly bend and quickly return to shape
Jigs and fixtures requiring repeated deflection  
Simulating the strength and stiffness of polypropylene (PP)
 
Download:
Technical Datasheet

Please always refer to the Formlabs link below for resin compatibility and life times: https://support.formlabs.com/s/article/Choosing-the-Right-Material?language=en_US