Modern Art Foundry

John Spring, a Polish immigrant, started his business in 1932 on Astoria Boulevard, at the end near what is now the Socrates Sculpture Park. In 1947, the foundry moved from its location near the East River to where it is at present. Spring built the business on close relationships with a small group of "prominent and prolific" artists. Among the artists who have worked there are Jose de Creeft, Jacques Lipchitz, Louise Bourgeois, Gaston Lachaise, Joan Miró, Alexander Archipenko, and Isamu Noguchi.

In contrast to most foundries that have switched over to ceramic shell casting, Modern Art utilizes the lost-wax casting method for producing its large-scale work. Workers first create a wax copy of the artist's original model and then apply a plastic coating to it. The mold is then fired in a kiln, which causes the wax to melt away. Molten bronze is then poured into the mold. This method yields an exact bronze replica of the artist's original model.

The foundry is known for its exacting and innovative work. Bourgeois chose the foundry to cast the Maman sculpture because of its reputation and output. In the early 1960s, Jasper Johns cast "Light Bulb," "Flashlight; Painted Bronze (ale cans)", "Painted Bronze (paintbrushes)", "Flag", and "Bronze (Light Bulb, Socket, Wire on Grid" at the foundry.

In 2002, artisans at the foundry replaced the original zinc statues that were part of the 1867 Civil War Soldiers Monument in the Green-Wood Cemetery, Brooklyn, with bronze replicas.

Modern Art Foundry has relocated to Glendale Queens in March of 2026.