CNC Machined Acrylic and Aluminum Prototype Accessories

Acrylic is cut on micro and standard machining centers with high spindle speeds, sharp single-flute cutters and air or mist cooling, which avoid melting and cracking. Edges and faces are then polished mechanically. Aluminum frames and brackets are milled in the same order, with fits checked against the acrylic parts so assemblies close without stress that could crack the plastic.

Cast acrylic machines better than extruded acrylic and resists crazing, so it is preferred for clear parts. Polycarbonate is tougher but scratches more easily and is harder to polish to optical clarity. Aluminum 6061 frames are commonly sandblasted and anodized. For acrylic, avoid alcohol-based cleaners and tight press fits, both of which can cause stress cracking.

Clarity, edge finish and dimensions are inspected on every acrylic part; scratches are checked under a light box. Aluminum parts are measured on critical fits. Parts are packed with protective film. Typical uses include light pipes for electronics, transparent covers for prototypes, display stands, lenses for lighting prototypes, fluid-visible test housings and small production accessories for consumer products and exhibitions.