Acrylic Sheet, Cast - Clear

Cast acrylic sheet is the premium grade of clear acrylic, produced by polymerizing liquid monomer between glass plates rather than melting and extruding pellets. That process yields a higher, more uniform molecular weight, and the difference shows up everywhere a fabricator touches the material: cast acrylic machines cleanly without gumming or chipping, holds thread, resists crazing from solvents and stress, and polishes to a water-clear edge that extruded grades cannot match. It transmits approximately 92% of visible light — more than glass — with excellent resistance to yellowing and UV degradation over years of outdoor exposure.

Cast acrylic is the standard specification for machined parts and prototypes, display cases and museum vitrines, awards and trophies, light pipes and edge-lit signage, laser-cut and engraved products, picture framing and glazing, tanks and enclosures, and any application where polished edges or heavy fabrication are part of the design. It cuts, routers, drills, taps, and laser-cuts with standard tooling, thermoforms with a wider processing window than extruded acrylic, and bonds with acrylic solvent cement for nearly invisible joints. It is roughly ten times more impact resistant than glass at half the weight, with no dangerous shards on breakage. Cast acrylic costs more per sheet than extruded and has looser thickness tolerances, so extruded is often the better choice for high-volume flat glazing where clarity matters more than machining.