Celastic was used considerably in the prop making industry in the mid to late twentieth century, but has now all but disappeared. Here is some information about what it is and what is used now.
I am Eric Hart, former assistant props master at the Public Theater in New York City, and a longtime prop maker.
This site is a way to share my work and the things I've learned over the years. It's also a way to connect with other prop makers, props masters, and artisans, as well as a collection of all things of interest to props people from around the internet.