ISO
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±0.1 mm
5-day
Acrylic CNC machining is a precision manufacturing process that uses computer-controlled tools to cut, mill, and shape acrylic sheets, tubes, bars, or blocks into custom parts. By following digital CAD designs, this method ensures high accuracy, repeatability, and clean finishes, ideal for both prototyping and full-scale production.
PMMA machining is widely used to create durable, transparent, or colored components for various industries, including aerospace, medical, signage, and electronics.
Acrylic, chemically known as polymethyl methacrylate (PMMA), is a family of synthetic resins and polymers derived from acrylic acid or related compounds. It is a transparent, scratch-resistant engineering plastic widely used in tanks, panels, optical components, and various display applications.
It is also marketed under trade names such as Lucite and Plexiglass. Common fabrication methods for acrylic include CNC milling, laser cutting, sawing, drilling, and polishing.
Acrylic stock is typically clear but also comes in a variety of opaque and colored options. After machining, surfaces may appear slightly frosted or matte, but they can be polished back to optical clarity as needed. The commonly used surface finishing options for acrylic parts are:
Standard CNC-machined surface with minor tool marks, left on the cut face. Ideal for non-cosmetic parts or where functional components are required.
The process blasts abrasive material at high pressure against the part's surface to create a uniform, frosted, or matte finish, removing tool marks and blemishes.
Polishing enhances acrylic with a glossy, optical-grade surface. Flame, vapor, buffing, or chemical methods enhance clarity. Custom-cut PMMA with polished edges is perfect for lenses, light guides, and enclosures.
Applying paint or protective coatings to surfaces provides many color choices while also enhancing properties such as UV resistance, surface hardness, and durability.
Yes, acrylic is excellent for machining when the proper grade is selected. Its thermoplastic nature makes it easy to shape with accuracy. Professional acrylic manufacturing provides clear, smooth results, while custom cutting allows for any design.
Yes, CNC machining is a fast and effective way to cut acrylic, especially for small batches or custom parts. Among available machines, CNC routers are particularly well-suited for PMMA. They use high-speed rotating bits to cut clean edges and precise shapes, making them ideal for signs, panels, custom acrylic sheets, and complex 2D or shallow 3D designs.
Cast acrylic is generally the best choice for CNC machining. It offers superior optical clarity, better edge quality, and greater resistance to melting during cutting. While extruded acrylic is more affordable and consistent in thickness, it tends to gum up during cutting and requires more post-processing.
PMMA offers higher clarity, UV stability, and a polished finish. It is best for moderate-impact use.
PC delivers greater toughness, heat resistance, and safety, with slightly less clarity.
