
Acrylic Machining Tolerances Guide: CNC Precision, Limits & Design Tips
Introduction: Don’t Treat Acrylic Like Aluminum Acrylic (PMMA) is one of the most widely used engineering plastics for transparent and
✪Over 19 years of precision manufacturing experience, with a comprehensive range of solutions
✪ISO 9001-certified production, ensuring quality
✪Flexible scheduling from prototyping to small-batch production
✪Precision tolerances and surface finishes, with robust supply capabilities
✪Global delivery from our own manufacturing facilities, with continuous optimization

Milling, Turning, Drilling and Tapping, Grinding

Anodizing, Sandblasting, Polishing, Laser Engraving, And Cosmetic Protection

Concept Mockup, Engineering Prototype, Pilot Run Sample

Laser Cutting,CNC Punching,CNC Bending,Welding

By combining multiple machining processes intelligently, we manufacture complex geometries, round parts, holes, and threaded features with exceptional precision and consistent quality, helping improve product performance while reducing manufacturing costs.
We use a variety of cutting tools to flexibly machine prototypes and production runs on components with grooves, slots, contours, and complex surfaces – whether stationary or moving along different axes.
Machine shafts, pins, bushings, threaded parts, rings, and sleeves with high surface finish, quickly and cost-effectively.
Custom thread sizes, including internal and external threads, to meet your needs for mounting holes, fastener threads, deep holes, and precision guide holes.
Precision shafts, molds, and tools, bearing surfaces, and components requiring micron-level precision – our grinding processes enhance part lifespan and performance.
Send us your requirements-including materials, quantities, surface treatments, and drawings-and you’ll receive a detailed quote promptly.
Once you review the quote and confirm your order, we’ll begin production efficiently and keep you updated on the progress.
Parts that have been quickly manufactured and inspected will be delivered to your shipping address via international shipping.
SzCrealink is a Shenzhen-based direct manufacturer that has specialized in high-precision CNC machining since 2007. We serve as a long-term partner to industries including automotive, medical devices, precision displays, AI robotics, aerospace, semiconductor equipment, and consumer electronics.
Why global manufacturers choose us:
Robust Production Capacity: Over 2,000 square meters of factory space, more than 50 advanced CNC machines, and a team of over 50 experienced engineers.
One-Stop Service: From rapid prototyping to full-scale mass production, we flexibly handle projects of all sizes.
Quality Assurance: Strict adherence to ISO 9001 standards ensures compliance with the most stringent tolerances and specifications.
Leveraging the advantages of our in-house manufacturing facility, we provide efficient, high-quality precision parts delivery services with exceptional speed and highly competitive costs.





Trusted by customers worldwide
of manufacturing experience, with continuous core expertise development
high-end precision manufacturing machines
a skilled support team

All drawings are carefully checked to ensure clear and accurate requirements.

Well-organized planning helps control cost, lead time, and quality.

Accurate CNC programming lays the foundation for precision machining.

Stable processes ensure efficiency while maintaining strict quality standards.

Quality checks are performed throughout the entire production process.

Every part is inspected to confirm it meets all specifications.

Proper packaging protects parts during handling and transportation.

Reliable logistics ensure safe and on-time delivery worldwide.

A dependable manufacturing partner you can trust long term.
From the initial design review to final delivery, SzCrealink provides seamless support at every stage to ensure your project is completed successfully and with confidence.
Quality materials are the foundation of every project. We source only proven, certified materials to give you peace of mind from the very start. Our extensive inventory includes a wide range of metals, plastics, and composites, expertly selected to meet the diverse demands of various industries and applications.
Metals are the workhorses of manufacturing. Thanks to their outstanding performance, they have earned a strong reputation across various industries. We provide all the metal materials you need to get the job done right.
Lightweight, strong, and easy to machine. Aluminum 6061 offers excellent corrosion resistance and a clean surface finish. Commonly used for structural parts, jigs, and prototypes. Performs well in high-speed milling with proper cooling.

A classic stainless steel with outstanding corrosion resistance and toughness. Non-magnetic in the annealed condition. Requires sharp tools and steady feeds to prevent work hardening. Widely used in food, chemical, and medical equipment.

A high-strength, precipitation-hardening stainless steel that provides both hardness and corrosion resistance. Best machined in solution-treated condition. Common in aerospace, marine, and precision mechanical components.

Medium carbon steel with good strength, wear resistance, and toughness. Easy to machine when annealed and suitable for heat treatment. Often used for shafts, bolts, gears, and other mechanical parts.
Low carbon steel known for excellent machinability and a smooth surface finish. Ductile and easy to form. Ideal for pins, rods, and fittings where high precision is needed but extreme strength is not required.
An air-hardening tool steel with great dimensional stability after heat treatment. Offers a good balance of toughness and wear resistance. Commonly used for dies, punches, and cutting tools.
In addition to common steels and aluminum alloys, we also work with a wide range of specialty metals, including Titanium, Brass, Copper, Magnesium, and Bronze.
Each material has its own strengths — Titanium for high strength and corrosion resistance, Brass and Bronze for excellent machinability and appearance, Copper for superior thermal and electrical conductivity, and Magnesium for its ultra-light weight.
These materials are selected to meet different engineering and performance requirements across various industries.
Plastics are lightweight and easy to work with, which makes them perfect for all kinds of applications. Here are some common options to help you pick the right one for your project.
Characteristics: Tough, impact-resistant, and easy to machine or mold. Provides good dimensional stability and surface finish. Commonly used for enclosures, housings, and consumer product parts.

Characteristics: High stiffness, low friction, and excellent dimensional stability. Easy to machine with good surface finish. Resistant to wear and moisture, ideal for precision parts like gears, bearings, and bushings.
Characteristics: Extremely tough and transparent plastic with high impact strength. Machines cleanly but requires sharp tools to prevent cracking. Excellent for clear covers, guards, and optical components.
Characteristics: Strong, wear-resistant, and lightweight engineering plastic. Absorbs moisture, which may affect dimensions slightly. Suitable for gears, rollers, and structural components.
Characteristics: High-performance plastic with exceptional heat, chemical, and wear resistance. Offers excellent dimensional stability and machinability. Ideal for aerospace, medical, and high-temperature applications.
Characteristics: Rigid and corrosion-resistant plastic with good dimensional stability. Easy to machine and bond. Commonly used for fittings, valves, and chemical handling equipment.
Characteristics: Homopolymer version of acetal plastic, offering higher strength and stiffness than standard POM. Excellent machinability and fatigue resistance. Used for precision mechanical and automotive components.
Characteristics: Very low friction coefficient and excellent chemical resistance. Soft and non-stick surface; requires care when machining to avoid deformation. Perfect for seals, insulators, and chemical-resistant parts.
At SzCrealink, we support a wide variety of composite materials to match the specific needs of your project. From carbon fiber and fiberglass to specialized resin blends, we’ve got you covered with plenty of options to choose from.
No matter what kind of composite you have in mind, our team is ready to help you select the right one and machine it to your exact specs. Just let us know what you need – we’re here to make sure you get the best material for the job.

Different industries have unique machining requirements
With advanced cnc machining equipment and an efficient production management system, we support rapid prototyping and volume production across various sectors, providing consistent and reliable part supply for your industry.

Precision and reliability are critical in aerospace. Our CNC machining delivers accurate, high-quality parts from prototyping to production.

We support automotive innovation with efficient CNC machining, from rapid prototyping to full-scale production.

Our CNC machining ensures precision and material control for medical device components, from custom parts to mass production.

We provide high-precision CNC parts for road, rail, air, and marine transportation, ensuring performance and reliability.

Our CNC machining offers speed and flexibility for consumer electronics, producing high-quality parts and assemblies.

We deliver high-precision CNC components for humanoid robotics, supporting reliable performance from concept to production.
Real customer cases
Each part that has earned our customers’ approval is a testament to our manufacturing capabilities.

Aluminum Alloy Shaped Parts

Medium Carbon Alloy Steel Parts

Mounting Base Aluminum 7075

Plate Metal Aluminum 6061

Aluminum 6061 CNC Custom Machining Part

Aluminum 6061 Mounting Base

Customized POM Parts

Panel Parts Aluminum Alloy 6061
The drawing on the left shows how we turn ideas into reality through efficient and reliable manufacturing solutions.





Only certified materials are accepted, with reports and basic inspections.

Consistent Checks, Reliable Results.FAI and regular in-process inspections ensure consistency.

Thread and Dimensional Accuracy.Threads and dimensions are inspected with gauges and CMMs.

A Systematic Approach to Quality.ISO 9001 ensures controlled and consistent quality processes.

Edges are smoothed for safety and better fit.

Parts are cleaned before further processing or packing.

Custom markings are applied as required.

Parts are packed to prevent transport damage.
Reliable manufacturing that earns customer trust.

Every design is tested and validated before production.

Controlled materials and manufacturing ensure consistent quality.

Every order is thoroughly inspected before shipment.
In addition to quality management system certificates, we also provide material certificates and detailed test reports.
ISO 9001 Quality System:Standardized processes ensure consistent quality.
Certified Materials:Verified materials with full traceability.
Inspection Reports:Detailed inspections ensure parts meet specifications.
Our machining services in action,verified by our customers.
The quality of the x components you have produced is good, we would like to assign you the manufacturing of these x components. Thank you.
Thank you for the parts. It worked out to our surprise, that the parts arrived on Thursday already with us. Thus, the customer’s request could be met. This is what we and the customer appreciated. The quality also suited him. Thanks again. Great.
Components have been good from what I hear, thank you for following up.Highly recommended! Excellent quality, reasonable delivery time, and pricing.
Browse our FAQ to quickly resolve your questions and get back to what matters.
We provide a comprehensive range of custom machining services, including CNC machining, milling, turning, grinding, wire EDM, rapid prototyping, fixture & jig fabrication, laser cutting, as well as metal manufacturing processes such as stamping, bending, and casting.
We support a wide variety of file formats, including STP, STEP, IGS, IGES, X_T, SAT, SLDXML, PRT, DXF, DWG, PDF, JPG, JPEG, PNG, and more.
Metals: Aluminum (2024, 5052, 6061, 6063, 6082, 7075, etc.), Carbon steel (10#–80#), Alloy steel (15Cr, 20Cr, 42CrMo, etc.), Stainless steel (201, 202, 301, 302, 303, 304, 316, 420, 430, 440, 630, etc.), Brass, Copper, Bronze, Titanium (TA/TC series).
Plastics: ABS, POM, PE, PP, PVC, PC, PMMA, PPS, Nylon, Acrylic, Bakelite, etc.
Others: Carbon fiber, Fiberglass, Wood, Hard rubber, PU, etc.
We can achieve machining tolerances up to ±0.005mm (±0.0002 inches).
Our standard machining process achieves a surface roughness of Ra0.4 (milled or turned) without additional polishing or grinding.
We offer a wide range of finishes, including polishing, mirror polishing, brushing, sandblasting, heat treatment, and more.
Our surface treatment options include anodizing, blackening, electroplating (zinc, nickel, chrome), electrophoresis, painting, powder coating, passivation, carburizing, and others.
Logos can be applied using laser engraving, CNC engraving, screen printing, and other techniques.
9.1 Raw material preparation
9.2 CNC programming
9.3 Machining & production
9.4 In-process quality inspection
9.5 Surface treatment
9.6 Final quality control (QC)
9.7 Packaging
9.8 Delivery
10.1 Inspection Process: Our QC system covers incoming material inspection, in-process monitoring, and final product testing. Any abnormalities are recorded, reported, and corrected immediately.
10.2 Testing Standards: We maintain a constant temperature (22 ± 2°C) and humidity (40%–70%) in our QC lab to ensure testing accuracy. All measuring instruments are regularly calibrated and properly maintained.
10.3 Testing Equipment: We use advanced equipment such as projectors, hardness testers, and other precision instruments. Test reports are archived in strict accordance with our QC process to guarantee traceability and consistency.
CNC trends, expert tips, and company news. Stay informed on all things precision manufacturing.

Introduction: Don’t Treat Acrylic Like Aluminum Acrylic (PMMA) is one of the most widely used engineering plastics for transparent and

What Is C45 Steel? C45 steel is a medium-carbon steel grade widely used in mechanical engineering and general industrial manufacturing.

What Is Tool Steel Material? Tool steel material refers to a group of high-carbon and alloy steels specifically designed for

CNC Production Time: How Long Does CNC Machining Really Take? When planning a CNC machining project, one of the first
Ready to get started? Share your design drawings, and we’ll handle the rest.
Trusted by many satisfied customers, their positive feedback drives us to deliver a better and more reliable cooperation experience for you.
WhatsApp Me