CNC Machining in Acrylic (PMMA)

Acrylic (PMMA), also known as plexiglass, has the reputation of “plastic crystal” and is often used as a substitute material for glass.

Advantages of Acrylic

Acrylic is known for its high transparency, affordability, and impressive hardness, rigidity, and strength. It is also easy to machine, making it a popular alternative to glass.

Key Features

High UV resistance

Good Chemical Resistance

High Transparency

High Mechanical Strength

Available Acrylic (PMMA) Specifications

The following table shows available Acrylic. If you have any other requirements, please contact us.

Acrylic (PMMA)

Tensile Strength

Elongation at Break

Hardness

Density

Color

7,540 PSI

10%

Rockwell M95

0.043 lb/in³
(1.11 g/cm³)

Black, White, Optically Clear

Color Options for Acrylic (PMMA)

The following table shows color options for Acrylic. If you have any other color requirements, please contact us.

Black

White

Optically Clear

Acrylic Surface Finishes

The following table shows common surface finish methods for Acrylic. If you have any other surface finishing requirements, please contact us.

Bead Blast

Acrylic (PMMA) FAQs

How can CNC cutting of acrylic be optimized?

To ensure smooth acrylic cutting using CNC and minimize potential challenges, it's crucial to secure the workpiece adequately to prevent vibrations. Employing a cutting bit specifically designed for acrylic enhances precision and reduces the risk of chipping or cracking. Opting for larger bit sizes often yields better performance, especially for intricate designs. Additionally, maintaining a steady and controlled cutting pace throughout the acrylic helps achieve clean cuts and avoids overheating. Pre-cooling the acrylic by placing it in a freezer for an hour before cutting can further mitigate the risk of overheating and distortion during machining.
What is the main material properties of acrylic?

Acrylic has excellent transparency, optical performance, and weather resistance. It also has good surface hardness, chemical resistance, and ease of processing.
What are the applications of acrylic in CNC machining?

Acrylic is commonly used for the manufacture of parts with high precision and transparancy, such as the LCD screens.
Is machining acrylic plastic feasible?

Yes, acrylic is commonly used in CNC machining due to its versatility and desirable properties. While it boasts scratch resistance, acrylic may exhibit brittleness in thin-walled sections, limiting its suitability for parts with intricate or delicate shapes. This consideration underscores the importance of selecting materials tailored to the specific requirements of the project to ensure optimal performance and durability.