Air is injected into the casting of this aluminum to reduce weight and create a crater-like appearance. These foam sheets are often used for sound insulation and architectural facades. Carbide- or diamond-tipped blades are required for machining. Diamond-tipped blades will cut this material more easily and not wear down as quickly as carbide-tipped blades.

Large-cell foam is lightweight due to its low density. It’s one-third the weight of small-cell foam and about 5% the weight of solid aluminum. Since it allows some light through, you can use it to build architectural light diffusers. This foam has the appearance of an aluminum sponge.

For technical drawings and 3-D models, click on a part number.