CNC Acrylic Machining Services
We machine acrylic parts to ±0.05 mm with clean, high-quality finishes. Our stress-relieving and vapor polishing processes help prevent micro-cracks and keep parts clear and durable over time.
CNC Acrylic Machining Services
We provide custom CNC machining services for acrylic (PMMA) parts, supporting your project from design through production. Whether you have complete technical drawings or just an initial concept, our team can assist with design optimization (DFM), material selection, and process evaluation to ensure your parts are manufacturable and cost-effective.Our capabilities include CNC milling, turning, as well as critical finishing processes such as stress-relieving and multi-stage precision polishing—ensuring excellent optical clarity, dimensional stability, and surface quality. We also support reverse engineering and fully customized manufacturing based on your specific requirements.
From functional prototypes to full-scale production, we offer flexible OEM and ODM support, consistent quality, and reliable lead times. Our focus is not just machining, but delivering parts that are ready for real-world applications.
What is Acrylic (PMMA)?
Acrylic, also known as polymethyl methacrylate (PMMA), is a versatile thermoplastic widely used in CNC machining. It combines high optical clarity, excellent light transmission, and strong UV resistance, making it a popular alternative to glass. Acrylic maintains dimensional stability and strength even under exposure to chemicals, temperature variations, and prolonged UV or fluorescent light. Its scratch resistance and machinability make it ideal for producing precision components through CNC milling, turning, and other acrylic machining processes used across industries such as medical, electronics, displays, and industrial equipment.
About Acrylic (PMMA) for CNC Machining
Acrylic (PMMA), also known as Plexiglas® or Lucite®, is a widely used thermoplastic for precision CNC machining. It offers excellent optical clarity, up to 92% light transmission, making it a strong and lightweight alternative to glass for transparent components.
From a machining perspective, acrylic requires careful control. It is rigid but brittle, and can develop micro-cracks or heat deformation if not processed correctly. Our team understands the differences between cast and extruded acrylic, selecting the right material and machining strategy to ensure stable, high-quality results.
By optimizing tool paths, cutting parameters, and finishing processes, we produce complex acrylic parts with clean edges, stable dimensions, and consistent transparency.
Acrylic Material Properties
Property | Value |
Tensile Strength | 8,000 – 11,000 psi |
Elongation at Break | 2% – 6% |
Hardness (Rockwell M) | M80 – M100 |
Density | 1.18 – 1.20 g/cm³ |
Heat Deflection Temp | 85°C – 105°C |
Light Transmittance | Up to 92% |
Machining Considerations
Acrylic is easy to machine but sensitive to internal stress. Without proper handling, it may develop “crazing” (micro-cracks) over time.
To address this, we offer:
- Optimized machining strategies to reduce heat buildup
- Controlled finishing processes to protect surface quality
- Optional post-machining annealing to relieve internal stress
This ensures your parts remain clear, stable, and durable in real-world applications.
Our CNC Acrylic Machining Capabilities
As a professional acrylic machining partner, we offer more than basic cutting services—we provide a complete solution to transform raw PMMA into high-performance, mission-critical components. By combining multi-axis CNC technology with deep material expertise, we precisely control every aspect, from tool heat generation to internal material stress, ensuring parts meet exact dimensional and optical requirements. Our facility is optimized for both rapid prototyping and high-volume production, serving demanding industries such as medical, aerospace, and semiconductor, and capable of handling complex geometries that many standard shops avoid. From initial CAD review to optical-grade finishing through vapor polishing, mechanical buffing, and proprietary annealing, we deliver parts that are durable, clear, and dimensionally stable. With flexible OEM and ODM support, we produce custom-to-drawing components with tolerances as tight as ±0.05 mm and lead times as fast as one day, providing an efficient, end-to-end solution for your most challenging acrylic projects.
Advanced Surface Finishing
In the field of acrylic machining, outsourcing large-scale projects often leads to inconsistent quality, especially when parts arrive with hazy surfaces or visible tool marks. We understand the value of optical-grade components, which is why we rely entirely on our in-house polishing and chemical finishing expertise developed over years. By carefully controlling transitions from frosted, semi-transparent to fully clear finishes, and applying vapor polishing to complex structures such as internal fluidic channels, we can achieve finished parts with up to 92% light transmission and surface roughness as low as Ra0.2 μm. Each part is crystal clear and ready for use in high-end laboratory, medical, or optical applications.
Stress Relieving & Annealing
Many acrylic parts may appear perfect upon delivery but develop fine micro-cracks (crazing) after months of use due to internal stresses. In our acrylic machining process, we optimize tool paths and cooling strategies, and apply long-cycle controlled annealing at 120°C–140°C to effectively relieve internal stress. This ensures parts maintain dimensional stability and long-term structural integrity. Our process also achieves tight tolerances down to ±0.05 mm, delivering parts that are both precise and durable.
Specialized Feature Machining
Acrylic is brittle, making deep holes, fine threads, and sharp corners challenging to machine without chipping. Using 5-axis CNC machining and specially designed tools, we overcome the limitations of this fragile material. Whether it’s multi-layer bonded complex channels or high-strength threaded inserts, we maintain edge integrity and prevent chipping. Our process supports high-precision tolerances of ±0.05 mm and minimum wall thicknesses as low as 1.0 mm, giving designers the freedom to implement compact and intricate geometries without compromise.
Expert DFM Support
Acrylic comes in cast and extruded grades, and is highly sensitive to corner radii, wall thickness, and internal stress, meaning poor design can lead to increased costs or reduced strength. Our engineers provide detailed design reviews and suggestions on acrylic material selection and machining optimization to help clients avoid manufacturing pitfalls during the prototyping stage. This hands-on support ensures parts are produced efficiently, with optimal cost, fast lead times, and high accuracy, ready for direct application in demanding projects.
Acrylic CNC Machining Services
Every service is backed by our expertise in acrylic CNC machining, delivering crystal-clear, durable components tailored to your exact specifications.
CNC Machining
CNC Milling
CNC Turning
5-Axis CNC Machining
Swiss CNC Machining
Assembly and Packaging
Our Acrylic CNC Machining Factory
We are a high-capacity acrylic CNC machining factory, specializing in the precision fabrication of custom components. Our 160,000-square-foot facility houses over 600 advanced machines, giving us the ability to handle everything from complex prototypes to high-volume production runs without compromising on speed or accuracy.
Our greatest strength is our team. With 500+ skilled operators and 120+ senior engineers, we offer more than just machining—we provide technical expertise and guidance at every stage. From intricate 5-axis milling to high-speed turning, our engineers ensure that every detail of your design is executed with precision. For companies seeking a reliable partner for acrylic CNC machining, we combine large-scale capacity with boutique-level precision, delivering high-quality parts that meet the most demanding industrial standards.
Quality Control & Inspection
In acrylic CNC machining, precision and surface quality are equally critical. Even a minor tolerance deviation or a subtle scratch can compromise an optical or medical component. That’s why we integrate quality control into every stage of production—from raw material intake to final packaging—ensuring that every part meets your exact design specifications.Our dedicated inspection lab is equipped with advanced metrology tools, including CMM (Coordinate Measuring Machines), optical comparators, and high-precision height gauges, allowing us to monitor geometric tolerances down to ±0.01 mm. Understanding the unique properties of acrylic, we also perform 100% visual inspection after polishing, ensuring parts are free of micro-scratches, streaks, or surface defects. Each batch comes with a detailed QC report, including dimensional measurements, surface finish verification, and visual inspection results, giving you complete confidence in the quality of every part before it leaves our facility.
Engineering Support
At our facility, engineers are more than machine operators—they are your technical advisors throughout the acrylic CNC machining process. Our team of over 120 experienced engineers has deep expertise in working with PMMA, fully understanding the material’s behavior under cutting heat, stress relief, and surface finishing. From the moment you upload your CAD files, our engineers conduct detailed Design for Manufacturability (DFM) analysis to ensure your parts are optimized for production.We help you avoid costly mistakes before machining even begins. Whether it’s recommending the ideal acrylic sheet grade (such as Plexiglas® or Acrylite®), optimizing tool paths for intricate fluidic channels, or adjusting wall thickness and corner radii to prevent chipping, our team identifies potential risks early. This proactive approach ensures complex geometries are faithfully reproduced while reducing material waste, minimizing rework, and shortening lead times. With our engineering support, even the most demanding acrylic projects are delivered efficiently, accurately, and cost-effectively.
Our Machining Equipments
Our machining workshop is a precision acrylic CNC machining powerhouse, equipped with over 600 advanced machines to handle the most complex and demanding projects. This extensive setup gives us unmatched flexibility to manage urgent prototypes, large production runs, or highly intricate parts without compromising accuracy or delivery times. The workshop includes a substantial fleet of 3-axis, 4-axis, and high-performance 5-axis CNC machining centers capable of executing complex surfaces and sharp corner features in a single setup, as well as precision CNC lathes and turning-milling centers optimized for cylindrical and rotational acrylic components. With in-house developed cutting tools, advanced cooling systems, controlled annealing furnaces, and fully automated polishing lines, we maintain optical clarity and structural integrity even under high-speed machining. By combining massive equipment scale, top-tier technology, and fully integrated post-processing, our workshop confidently tackles urgent, large-volume, or technically challenging acrylic CNC machining orders, ensuring every part meets the highest standards of precision and quality.
Surface Finishing Options for Acrylic (PMMA) CNC Parts
Finishing Method | Description | Typical Applications |
As-Machined | Parts left as cut; transparent or translucent finish depending on machining | Functional prototypes, internal components |
Bead Blasting | Matte or frosted surface; diffuses light and hides tool marks | Decorative panels, diffused light covers |
Flame Polishing | Glossy, glass-like edges for high clarity | Display covers, lenses, light guides |
Vapor Polishing | Restores optical transparency; removes microscopic imperfections | Viewing windows, high-visibility acrylic parts |
Buffing & Hand Polishing | High-gloss finish on flat or large surfaces | Consumer panels, protective covers, premium displays |
Painting / Silk Screening / UV Printing | Adds colors, logos, markings without affecting clarity | Branding, labeling, functional markings |
Acrylic CNC Machining Tolerances & Size Limits
To ensure your designs are perfectly translated from CAD drawings to finished parts, we maintain strict machining standards. Whether your project involves micro-scale precision medical components or large industrial transparent housings, our equipment and processes deliver the highest industry-level accuracy and dimensional coverage.
Specification | Capability Details | Specification |
Precision Tolerances | ±0.01 mm (±0.0004″) with 2D drawings; ±0.127 mm standard | Precision Tolerances |
Surface Roughness | As smooth as Ra 0.1 μm (before additional polishing) | Surface Roughness |
Maximum Part Dimensions | 130 × 63.5 × 63.5 cm (51.1 × 25 × 25″) | Maximum Part Dimensions |
Minimum Part Dimensions | 1 × 1 × 1 mm (0.039 × 0.039 × 0.039″) | Minimum Part Dimensions |
Minimum Wall Thickness | 0.2 mm (0.0079″), depending on geometry | Minimum Wall Thickness |
Machining Processes | 3, 4, & 5-Axis CNC Milling, CNC Turning, Drilling, Tapping | Machining Processes |
Why Choose Us for Acrylic CNC Machining?
Acrylic CNC Machining Application Industries
Medical & Healthcare
Automotive
Optics & Lighting
Electronics & Consumer Products
Industrial Equipment
Construction & Architecture
Acrylic CNC Machining FAQ
Is PMMA (polymethyl methacrylate) durable?
Can acrylic crack during CNC machining?
Can acrylic parts be vapor polished?
Do you support small batch acrylic machining?
Precision Acrylic Machining, Made Simple.
From prototype to mass production, our one-stop service makes acrylic machining simple and efficient.