Gallery › Polystyrene balls Search the gallery Search Planet Hemisphere in Production A hollow white hemisphere with partially finished edges rests on a workshop surface. We supplied the white polystyrene forms for Theater Koblenz; the theatre team painted and detailed them. ← Previous Back to album Next → Planning something similar? Polystyrene Balls and Spheres ↗ Ball Sizes and Construction ↗ See the Full Project ↗ Have a project in mind? We’d be happy to help. Discuss Your Project →