Sculptors’ Favorite Plaster Is Being Discontinued, And They’re Freaking Out

“The specialty plaster is a type of gypsum product known as Hydrocal, which … is durable enough for metal casting but soft enough for direct sculpting. In addition to artworks, it is used in architectural restoration projects, dental molds, orthopedic molds and the customization of prosthetic limbs.” – The New York Times

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