Hollow Polystyrene Balls

These professional-grade, hollow polystyrene spheres are an essential material for architectural massing, scenic design, and structural prototyping. Featuring a two-piece construction with an integrated "rabbet" (stepped joint) for precise alignment, these spheres provide a perfectly geometric, lightweight blank that can be easily joined or used as two separate hemispheres. Available in a wide variety of diameters, they offer a neutral, medium-pored surface that is highly receptive to diverse finishing techniques.

Applications:

• Architectural Model Making: The definitive choice for representing spherical structural elements, urban massing, or topographical domes. The two-piece design allows architects to easily integrate internal lighting, structural supports, or mechanical components before sealing the sphere.
• Exhibition & Display: Frequently utilised in the construction of large-scale hanging installations, point-of-sale prototypes, and decorative window displays. The hollow interior significantly reduces the mass of the final assembly, allowing for easy suspension.
• Film & TV Prop Making: A staple for building lightweight "hero" props, futuristic technology mock-ups, and scenic background elements. The polystyrene surface can be easily primed, sanded, and textured to simulate a wide range of materials from cast concrete to high-tech metallic finishes.
• Prototyping & Industrial Design: Ideal for early-stage volumetric studies and ergonomic mock-ups. The spheres can be easily modified to test intersections, openings, and structural joinery using standard workshop tools.

Technical Specifications:

• Material: Medium-pored Polystyrene (Expandable Polystyrene - EPS)
• Structure: Two-piece, hollow with rabbet/stepped joint
• Surface Finish: Raw/Untreated
• Diameter: 200mm - 400mm
• Properties: Extremely lightweight, buoyent, non-conductive, recyclable
• Assemble: Bond with Foam Tack, UHU Por or Gorilla Glue
• Apply Foamcoat for a tough, durable finish that can be sanded, smoothed or carved

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