PMMA (Acrylic) CNC Machining Service
Get high-precision PMMA (Acrylic) CNC machined parts with excellent clarity, strength, and surface quality. Our advanced machining capabilities deliver accurate prototypes and production components with smooth finishes, complex geometries, and reliable performance for various industries.
PMMA (Acrylic) in CNC Machining
PMMA (Polymethyl Methacrylate), also known as acrylic, is a transparent thermoplastic widely used in CNC machining due to its excellent optical clarity, lightweight properties, and weather resistance. It offers a smooth surface finish and good dimensional stability, making it suitable for precision components that require both functionality and visual appeal.
| Available PMMA Grades | PMMA Black, PMMA Transparent, PMMA White |
| Price | $ |
| Lead time | Under 10 days |
| Wall thickness | Minimum 0.8 mm |
| Tolerances | ±0.125 mm (±0.005 in) |
| Max part size | 200 x 80 x 100 cm |
PMMA CNC Machining Materials
Machined Acrylic (PMMA) Properties
PMMA (Acrylic) is a transparent engineering thermoplastic known for its excellent optical clarity, weather resistance, and smooth surface finish. Its balanced properties make it suitable for CNC machined parts that require both visual appeal and reliable performance.
Advantages and Limitations of PMMA (Acrylic) CNC Machining
PMMA (Acrylic) CNC machining provides excellent optical clarity, lightweight performance, and weather resistance, making it suitable for many precision applications. However, it also has some limitations that should be considered during material selection.
- Excellent Optical Clarity:
PMMA offers outstanding transparency, making it ideal for clear covers, lenses, display components, and optical parts. - Lightweight Material:
Acrylic is lighter than glass while providing similar visual clarity, making parts easier to handle and integrate into assemblies. - Good Weather Resistance:
PMMA performs well against UV exposure and outdoor conditions, helping maintain appearance and performance over time. - Versatile Applications:
CNC machined acrylic parts are used in industries such as automotive, medical, electronics, lighting, and consumer products. - Easy Machinability:
PMMA can be CNC machined with high precision to create complex designs and achieve smooth surface finishes.
- Brittle Material:
Although durable, PMMA can crack or chip under heavy impact or excessive mechanical stress. - Scratch Sensitivity:
Acrylic surfaces can scratch easily, so careful handling and finishing are required to maintain appearance. - Thermal Expansion:
PMMA expands and contracts with temperature changes, which may affect dimensional stability in high-temperature environments.
Partner with Tuowei Precision to Shape Your Vision
From rapid prototypes to scalable production, Tuowei Precision delivers reliable CNC machining with accuracy and consistency at every step. Start your project today.
- Established engineering skills.
- Global project support
- Advanced CNC solutions
- Co-creation of products.
- Expandable capacity of production.
- All uploads are secure and confidential
CNC Machining Tolerances
Our CNC machines operate with precision tolerances that meet industry standards, ensuring that every part is consistently accurate and fits perfectly with other components.
| Feature Type | Typical Tolerance |
|---|---|
| General Dimensional Tolerance | ±0.025 mm (±0.001″) |
| High Precision Tolerance | ±0.005 mm (±0.0002″) |
| Hole Diameter (Drilled) | ±0.05 mm (±0.002″) |
| Hole Diameter (Reamed/Bored) | ±0.01 mm (±0.0004″) |
| Shaft Diameter (Turned) | ±0.01 mm (±0.0004″) |
| Flatness | 0.02 mm per 100 mm |
| Parallelism | ±0.02 mm |
| Perpendicularity | ±0.02 mm |
| Surface Roughness (Ra) | 1.6–3.2 μm (63–125 μin) |
| Positional Tolerance | ±0.01 mm to ±0.02 mm |
| Thread Tolerance (Cut) | 6H / 6g (ISO) or Class 2A/2B (ANSI) |
| Minimum Feature Size | 0.5 mm (0.020″) |
| Repeatability | ±0.005 mm (±0.0002″) |
PMMA (Acrylic) CNC Machining FAQs
What speed is optimal for CNC machining acrylic?
The ideal CNC machining speed for acrylic depends on the part design, thickness, tooling, and required finish. Using higher spindle speeds with proper feed rates helps achieve smooth cuts while reducing the risk of cracking, melting, or chipping.
Which CNC tool is most effective for cutting acrylic?
Carbide and diamond-coated cutting tools are commonly used for acrylic CNC machining. These tools provide clean cuts, improve surface quality, and help reduce chipping during the machining process.
Is PMMA (Polymethyl Methacrylate) durable?
Yes, PMMA offers good durability along with excellent UV and weather resistance. It is suitable for indoor and outdoor applications where long-term clarity and stable performance are required.
Are CNC routers capable of cutting acrylic?
Yes, CNC routers can effectively machine acrylic when the correct tools and machining parameters are used. Proper cutting speed, feed rate, and tooling selection help achieve accurate parts with smooth finishes.
Is acrylic suitable for CNC machining?
Yes, acrylic is highly suitable for CNC machining due to its excellent transparency, lightweight properties, and ability to achieve precise details. It is commonly used for prototypes, optical components, displays, covers, and custom parts.