Get Custom plastic or metal parts within 3 days
CNC Machining Services
Find the best fit CNC machining service for your plastic and metal parts, which produce and deliver on-demand. Bring your product from the design and prototyping stage through to full production with our experts.
- Tight tolerance ±0.05mm
- ISO 9001:2015 certified, 100% part inspection
- 24/7 operations, quick turnaround
Wide Range of CNC Machining Services
Completed operations include milling, slotting, drilling, tapping, counterboring, chamfering, threading, knurling, brazing, grooving, trimming, and nickel plating.
CNC Cutting
CNC cutting is a precision manufacturing process that uses computer-controlled equipment to cut and shape materials like metal, plastic, and composites. Short for Computer Numerical Control, CNC cutting relies on pre-programmed instructions (G-code) to guide the machine’s movements with high accuracy. This method is widely used in industries such as aerospace, automotive, and electronics for producing complex parts with consistent quality. CNC cutting supports a variety of techniques, including laser cutting, waterjet cutting, and plasma cutting, offering excellent repeatability and material efficiency. It is ideal for both prototyping and high-volume production where tight tolerances are critical.
Tolerance for CNC Milling Services
| Type | Metals | Plastics | Standard or Customized |
| Linear Dimension | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
| Hole Diameters(Not Reamed) | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
| Shaft Diameters | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
CNC Milling
CNC milling is a computer-controlled subtractive manufacturing process that uses rotating cutting tools to remove material from a solid workpiece. Guided by CAD/CAM designs, CNC milling machines produce highly accurate and complex parts without manual input. This process is ideal for machining metals, plastics, composites, wood, and even glass. It supports both prototyping and full-scale production with consistent repeatability. Unlike additive processes such as 3D printing, CNC milling creates precise geometries by subtracting material, making it a preferred choice in aerospace, automotive, medical, and electronics industries where tight tolerances and surface finishes are essential for performance and reliability.
Tolerance for CNC Milling Services
| Type | Metals | Plastics | Standard or Customized |
| Linear Dimension | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
| Hole Diameters(Not Reamed) | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
| Shaft Diameters | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
CNC Turning
CNC turning is a precision machining process that uses computer-controlled lathes to shape raw material into cylindrical components. The workpiece rotates while a stationary cutting tool removes material to create features such as grooves, threads, tapers, and slots. CNC turning offers excellent dimensional accuracy, repeatability, and surface finish, making it ideal for producing shafts, bushings, and other round parts. Modern CNC turning machines are far more efficient than traditional manual lathes, enabling faster production and tighter tolerances. This process is widely used in the aerospace, automotive, medical, and industrial sectors for both prototyping and high-volume manufacturing.
Tolerance for CNC Milling Services
| Type | Metals | Plastics | Standard or Customized |
| Linear Dimension | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
| Hole Diameters(Not Reamed) | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
| Shaft Diameters | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
Electrical Discharge Machining
Electrical Discharge Machining (EDM) is a non-contact machining process that uses controlled electrical sparks to erode material from electrically conductive workpieces. Ideal for hard metals like titanium, Inconel, and tool steel, EDM excels in producing intricate geometries, tight-tolerance features, and sharp internal corners that are difficult to achieve with conventional cutting tools. Common EDM types include wire EDM, sinker EDM, and EDM hole drilling. This process is widely used in aerospace, medical, and mold-making industries for machining dies, molds, and precision components. EDM is especially valuable for cutting hardened materials or delicate parts where minimal mechanical stress is essential.
Tolerance for CNC Milling Services
| Type | Metals | Plastics | Standard or Customized |
| Linear Dimension | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
| Hole Diameters(Not Reamed) | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
| Shaft Diameters | +/- 0.01 mm+/- 0.0003 inch | +/- 0.05 mm+/- 0.002 inch | ISO 2768-M |
Rollyu Advantages in CNC Machining
Precision, Quality and Affordability at any volume. Our team responds quickly to accommodate your needs.
An Experienced Team with Expertise
Competitive Prices in the Industry
One-To-One Collaboration & Proactive DFM
Industry-Leading Turnaround Times
One-To-One Collaboration & Proactive DFM
Industry-Leading Turnaround Times
Materials & Finishes
There are a wide variety of materials that can be machined using technology, Rollyu provides machining quotes for more than 30 engineering-grade plastic and metal materials.
Materials for CNC Metal Parts
Characteristics & Machining Performance
Options
Aluminum
One of the most popular aluminum alloys, known for its high chromium content, excellent corrosion resistance, lightweight, and thermal conductivity. Ideal for complex designs and applications requiring welding or brazing.
6061-T6 7075-T651 2024-T81 6063 6082 C250 5052 MIC-6 APT 5 etc.
Stainless Steel
Provides excellent corrosion resistance and high-temperature strength, perfect for both functional and aesthetic uses. Durable, easy to shape, low-maintenance, eco-friendly, and fully recyclable.
303 304 316 410 416 430 17-4 13-8 15-5 etc.
Steel
Steel is strong, adaptable, and versatile, with adjustable hardness for various industrial uses. It’s ductile, malleable, highly weldable, and offers shape memory, with a boiling point around 3000°C.
Carbon steel. A36,1018,1020, 1045,1060,#45, 40CrNiMo,etc. Alloy steel.4140,4340,D13,M2,En24,P91. etc. Tool steel. A2,O1,D2,W1,H10,SKD11, S7,T1,etc, INVAR 36 (Alloy 36, UNS K93600)，INVAR 42 (Alloy 42, UNS K94100),etc.
Copper
Copper is a reddish-orange, soft metal with excellent electrical and thermal conductivity, malleability, and corrosion resistance. It’s widely used in wiring, electrical components, and offers antimicrobial and heat transfer benefits.
C101 C102 C110 C112 C706 C715 C172 C173 C107 etc.
Brass
Brass is more malleable than zinc or bronze, with antimicrobial properties, good resonance, low friction, and excellent conductivity. It’s ductile, spark-resistant, durable, golden-colored, and easily machinable for detailed parts.
C260 C268 C280 C353 C360 C385 C443 C464 C87500, C87600 etc.
Bronze
Bronze offers excellent surface finish, high ductility, and precision, with great electrical and thermal conductivity. It’s corrosion-resistant, low-friction, durable, and ideal for bearings, bushings, and marine applications.
C51000, C51900, C52100 C95400, C95500, C95800 C65500, C65600 C86300, C86400, C86500 C90300, C90500, C90700 C93200, C93600 C63000 C70600, C71500 C93200, SAE 660 etc.
Titanium
Titanium is a strong, lightweight metal with a high strength-to-weight ratio, 40% lighter than steel. It’s highly corrosion-resistant, making it ideal for aerospace, medical, and challenging environments.
Grade 1, Grade 2, Grade 3, Grade 4, Grade 5 (Ti-6Al-4V),Grade 9 (Ti-3Al-2.5V),Grade 23 (Ti-6Al-4V ELI) Ti-10V-2Fe-3Al,Ti-15V-3Cr-3Al-3Sn,Beta C (Ti-3Al-8V-6Cr-4Mo-4Zr) Grade 12 (Ti-0.3Mo-0.8Ni)
Tungsten Steel
Tungsten is one of the hardest materials, with a high melting point, excellent thermal conductivity, and low thermal expansion. These qualities make it difficult to machine using traditional methods.
ISO K,C1,C2,C3,C4 ISO P,P10,P20,P30,P50 ISO M,M10,M20,M40 ISO K,K10,K20,K40 ISO H,H10,H20,H30 YG6,YG8,YG10,YG15
Materials for CNC Metal Parts
Characteristics & Machining Performance
Options
POM/Delrin
POM (Polyoxymethylene), or Delrin, is an engineering thermoplastic known for its low friction, high dimensional stability, wear resistance, and excellent mechanical properties, making it perfect for precision parts.
Homopolymer POM (Delrin) Medical-Grade POM Food-Grade POM Copolymer POM Reinforced POM Lubricated POM Electrically Conductive/Anti-Static POM UV-Stabilized POM Low-Wear POM Flame-Retardant POM etc.
PC(Polycarbonate)
Polycarbonate (PC) is a tough, impact-resistant thermoplastic with excellent transparency and heat resistance. It’s easily machinable, making it perfect for precision parts that require clarity and strength.
General-Purpose Polycarbonate Medical-Grade Polycarbonate High-Impact Polycarbonate UV-Stabilized Polycarbonate Flame-Retardant Polycarbonate Optical-Grade Polycarbonate Heat-Resistant Polycarbonate Reinforced Polycarbonate Anti-Static or Conductive Polycarbonate etc.
PA (Nylon)
PA (Nylon) is a strong, flexible thermoplastic known for its durability, thermal stability, abrasion resistance, and chemical resistance. While moisture-absorbent, it’s ideal for complex, high-performance applications.
Nylon 6 Nylon 66 (PA66) Nylon 11 (PA11) Nylon 12 (PA12) Glass-Filled Nylon Heat-Stabilized Nylon Flame-Retardant Nylon Conductive or Anti-Static Nylon High-Impact Nylon etc.
PEEK
PEEK (Polyetheretherketone) is a high-performance thermoplastic with excellent chemical resistance, strength, and stability. It handles high temperatures, steam, water, and seawater, offering unmatched durability in tough environments.
Unfilled PEEK Medical-Grade PEEK Food-Grade PEEK Electrically Conductive PEEK Glass-Filled PEEK Carbon-Filled PEEK Bearing-Grade PEEK High-Temperature PEEK High-Strength PEEK etc.
PTFE (Teflon)
PTFE (Teflon) is a high-performance fluoropolymer known for its non-stick surface, chemical resistance, thermal stability, and low friction. It handles extreme temperatures and offers excellent insulation and wear resistance.
Virgin PTFE (Unfilled PTFE) FDA-Approved Food-Grade PTFE Medical-Grade PTFE Filled PTFE(Glass-Filled PTFE, Carbon-Filled PTFE, Graphite-Filled PTFE, etc.) Expanded PTFE (ePTFE) Modified PTFE Reinforced PTFE Conductive PTFE Porous PTFE etc.
Garolite G-10/G-11/FR4
Garolite (G-10, G-11, FR4) is a strong composite made from fiberglass and epoxy resin, offering excellent electrical insulation, chemical resistance, and durability, even in humid or moist conditions.
G-10 Garolite FR4 Garolite G-11 Garolite CE Garolite (Canvas Phenolic) LE Garolite (Linen Phenolic) G-7 Garolite (Silicone Glass) G-9 Garolite (Melamine Glass) G-5 Garolite (Melamine Glass) ESD-Safe Garolite etc.
Ultem - natural PEI
ltem® (Polyetherimide, PEI) is a high-performance thermoplastic known for its excellent mechanical properties, thermal stability, and chemical resistance, it is widely used in industries requiring materials that can withstand high temperatures, mechanical stresses, and harsh environments typically transparent or light amber in appearance.
General-Purpose Ultem (Ultem 1000) Food-Grade Ultem Medical-Grade Ultem Electrically Conductive Ultem High-Temperature Ultem Glass-Filled Ultem (Ultem 2300) Carbon-Filled Ultem (Ultem 2400) Flame-Retardant Ultem Lubricated Ultem etc.
Ceramic
Ceramics are tough, heat-resistant, and durable non-metallic materials, made by firing compounds like oxides and carbides. They’re strong under compression but brittle under tension, ideal for harsh, high-temperature environments.
Traditional Ceramics Advanced Ceramics (Technical Ceramics) Oxide Ceramics {Alumina (Al2O3), Zirconia (ZrO2).} Non-Oxide Ceramics Glass Ceramics Bioceramics Electroceramics Structural Ceramics Refractory Ceramics Porous Ceramics etc.
HDPE (High Density PE)
A type of thermoplastic polymer made from petroleum. It has excellent physical properties. HDPE is known for its strength, durability, chemical resistance, weatherproof properties, and resistance to a variety of environmental factors.
General-Purpose HDPE High-Molecular-Weight HDPE (HMW-HDPE) Ultra-High-Molecular-Weight HDPE (UHMW-HDPE) UV-Stabilized HDPE Food-Grade HDPE Medical-Grade HDPE Flame-Retardant HDPE Conductive/Anti-Static HDPE PE 100 PE 80 etc.
Torlon PAI
Torlon® PAI (Polyamide-imide) is a high-performance thermoplastic used in demanding applications, offering excellent resistance to high temperatures, mechanical stress, and harsh chemicals in extreme conditions.
General-Purpose Torlon (Torlon 4203) Glass-Filled Torlon (Torlon 5030) Carbon-Filled Torlon (Torlon 7130) Bearing-Grade Torlon (Torlon 4301) High-Strength Torlon (Torlon 5530) Electrically Conductive Torlon Ultra-Wear-Resistant Torlon High-Temperature Torlon Medical-Grade Torlon ow-Wear Torlon (Torlon 4540) etc.
PVC
PVC (Polyvinyl Chloride) is one of the most commonly used synthetic polymers in the world. It is a versatile plastic that can be produced in two main forms: rigid and flexible, weather and UV Resistance, PVC has a wide range of applications due to its cost-effectiveness, durability, and ease of processing.
Rigid PVC (uPVC - Unplasticized PVC) Pressure PVC (PVC-O or Oriented PVC) Flexible PVC (Plasticized PVC) Medical-Grade PVC Electrical-Grade PVC UV-Stabilized PVC Clear PVC Anti-Static PVC CPVC (Chlorinated PVC) High-Impact PVC etc.
Materials for CNC Metal Parts
Characteristics & Machining Performance
Options
Anodizing
Anodizing is an electrochemical process that strengthens metal surfaces, improving durability, corrosion resistance, and appearance. Commonly used on aluminum, it also works on magnesium and titanium for enhanced wear resistance.
"Aluminum 6061-T6 7075-T651 2024-T81 6063 5052 etc."
Hex Free Clear Chemfilm
Hex-free clear chem film is a protective coating for aluminum, created through a chemical reaction. It forms a durable, corrosion-resistant layer, acting as a sealant to protect against environmental damage.
"Aluminum 6061-T6 7075-T651 2024-T81 6063 5052 etc."
Sand Blasting/Bead Blasting
Sandblasting, or abrasive blasting, uses compressed air to blast abrasive particles at high speeds, cleaning, smoothing, or texturing surfaces by removing rust, paint, scale, and other contaminants.
"Aluminum 6061-T6 7075-T651 2024-T81 6063 5052 etc."
Passivated
Passivation is a chemical treatment that creates a protective film on a material’s surface, increasing corrosion resistance without altering the base metal, helping it withstand environmental exposure.
"Stainless steel 303 304 316 416 etc."
Black Oxide
Black oxide is a chemical coating applied to metals like steel, copper, and zinc. It provides a sleek, dark finish, mild corrosion resistance, and is often sealed with oil or wax for added durability.
"Steel Carbon steel. A36,1018,1020, 1045,1060,#45, 40CrNiMo,etc. Alloy steel.4140,4340,D13,M2,En24,P91. etc. Tool steel. A2,O1,D2,W1,H10,SKD11, S7,T1,etc, INVAR 36 (Alloy 36, UNS K93600)，INVAR 42 (Alloy 42, UNS K94100),etc."
Satin Nickel Plating
Satin nickel is a smooth, non-reflective finish with a velvety appearance, popular since the 1970s. It resists fingerprints and is used in automotive interiors, trim, plumbing, and molded plastic parts.
"Steel Carbon steel. A36,1018,1020, 1045,1060,#45, 40CrNiMo,etc. Alloy steel.4140,4340,D13,M2,En24,P91. etc. Tool steel. A2,O1,D2,W1,H10,SKD11, S7,T1,etc, INVAR 36 (Alloy 36, UNS K93600)，INVAR 42 (Alloy 42, UNS K94100),etc."
Electroplating
Electroplating is a process that applies a thin metal layer to an object using electric current, improving durability, conductivity, and corrosion resistance. The object acts as the cathode in an electrolytic cell.
"Steel Carbon steel. A36,1018,1020, 1045,1060,#45, 40CrNiMo,etc. Alloy steel.4140,4340,D13,M2,En24,P91. etc. Tool steel. A2,O1,D2,W1,H10,SKD11, S7,T1,etc, INVAR 36 (Alloy 36, UNS K93600)，INVAR 42 (Alloy 42, UNS K94100),etc."
Brushed
Brushed stainless steel, or dull polished metal, has a satin finish with fine lines created by polishing with a grit belt and softening with an abrasive pad, giving it an elegant, subtle luster.CNC etching uses precise, controlled cuts to add details like text, branding, serial numbers, and measurements to parts. It's highly accurate and versatile for both decorative and functional applications
"Aluminm Stainless steel Steel Brass Copper Bronze etc."
CNC Etching/ CNC engraving
CNC etching uses precise, controlled cuts to add details like text, branding, serial numbers, and measurements to parts. It's highly accurate and versatile for both decorative and functional applications.
"Aluminm Stainless steel Steel Brass Copper Bronze Plastic etc."
Laser Marking/Laser Engraving
Laser marking uses a focused beam to create permanent, abrasion-resistant marks on surfaces. Unlike ink, it won’t fade over time, making it perfect for durable, high-precision applications.
"Aluminm Stainless steel Steel Brass Copper Bronze Plastic etc."
Polishing
" Polishing creates a smooth, shiny surface with high reflection by rubbing or applying chemicals. It removes minimal material, usually microns, and is best on pre-finished, high-quality surfaces."
"Aluminm Stainless steel Steel Brass Copper Bronze etc."
Powder Coating
" Powder coating is a dry process where a polymer powder is applied electrostatically and cured with heat or UV light, creating a durable, impact-resistant finish on metal, plastic, and composites."
"Aluminm Stainless steel Steel Brass Copper Bronze etc."
PVD Cotaing {Physical vapor deposition (PVD)} of application
Physical vapor deposition (PVD) is a vacuum process that vaporizes a solid material to create thin, durable coatings, improving the mechanical, chemical, electrical, or optical properties of various products.
"Aluminm Stainless steel Steel Brass Copper Bronze etc."
Silk Screen, Printing
Screen printing, or silk screening, uses a mesh screen and stencil to transfer ink onto a surface. A squeegee presses ink through the screen, creating precise, multi-colored designs with separate screens for each color.
"Aluminm Stainless steel Steel Brass Copper Bronze Plastic etc."
Knurling
" Knurling is a machining process that adds textured patterns, like diamond or straight lines, to a workpiece’s surface. It improves grip, aesthetics, and functionality, often used on cylindrical, turned parts."
"Aluminm Stainless steel Steel Brass Copper Bronze etc."
We can source any other materials upon request! If you don’t see the material you need please contact us
Examples of Our Work
Here are some examples of CNC machined components that we have made from different materials.
Click on an image to find out more about the component.
Explore Our Additional Resources for CNC Machining Services
Responsible for Quality
There are a wide variety of materials that can be machined using technology, Rollyu provides machining quotes for more than 30 engineering-grade plastic and metal materials.
Responsible for Quality
At Rollyu Precision, quality is built into every step of the CNC machining process—from material verification and in-process control to final dimensional inspection. We use advanced metrology equipment including coordinate measuring machines (CMMs), micrometers, thread gauges, and surface roughness testers to ensure tight tolerances, precise thread engagement, and consistent surface finishes.
Certified to ISO 9001:2015 and ISO 13485:2016, our quality management system supports full traceability and compliance with industry-specific requirements. We serve sectors including medical devices, robotics, photonics, and industrial automation, delivering CNC machined components that are clean, accurate, and production-ready—every time.
01 Material inspection
02 Vision Measuring System
03 CMM Testing
04 Height Gauge Testing
05 Inside Micrometer Measurement
06 Outside Micrometer Measurement
07 Digital Caliper Measurement
08 Thread Gauge Inspection
CNC Machining Services FAQs - Your Partner in Precision
Getting your custom CNC parts machined to specification and ship on time shouldn't be a complex process. Here at Rollyu Precision, we specialize in providing high-precision CNC machining services
How do you guarantee the quality of my parts?
Our ISO 9001 & 13485-certified quality system is designed for complete peace of mind. We ensure unmatched part quality through rigorous inspections at every stage, from incoming materials to final parts inspections, with complete documentation and a zero-defect commitment.
Is my design information safe with you? Can we use an NDA?
We treat your intellectual property with the same seriousness we treat our own. Protecting your design's confidentiality is a top priority. We'll sign an NDA and keep your design files on secure servers .
What specific CNC machining services do you offer?
We are a full-service precision machine shop equipped to handle everything from fast-turn rapid prototypes to low or high-volume production runs. Our core CNC machining services include: CNC milling services, CNC turning services, Swiss machining, EDM machining, CNC grinding, CNC Drilling, Tapping, Surface finishing, etc.
What kind of materials do you machine?
We machine a huge variety of engineering-grade metals and plastics to meet the demands of industries from aerospace to medical devices.
- Metals:We work with Aluminum (6061, 7075, MIC-6), Stainless Steel (303, 304, 316, 17-4 PH), Carbon & Alloy Steel, Titanium, Ceramic, Brass, Bronze, and Copper.
- Plastics:Our expertise covers everything from general-purpose plastics like Delrin (POM), Nylon, PTFE, PC, PMMA, and ABS to high-performance polymers like PEEK and Ultem.
Can you handle surface finishing and other secondary operations?
Rollyu Precision is your one-stop provider for finished CNC parts, a guarantee the final part meets your specifications and cosmectic requirements. Our CNC finishing services include anodizing, and powder coating for aluminum, powder coating and painting for steel, bead and sand blasting for uniform matte finishes, plating (nickel, zinc, chrome) for a wide range of materials, passivation for stainless steel, black oxide for steel, heat treating to achieve required hardness and strength, and precision laser engraving/marking for part numbers, QR codes, and logos.
What is your typical lead time for a project?
Lead time depends on part complexity, quantity, and material availabilityA standard project can often be completed in 2-3 weeks.
For urgent needs, we offer expedited services that can deliver parts in as little as 3-5 business days. The best way to get a precise timeline is to submit your RFQ—we typically provide a detailed quote with a firm lead time within 24 hours.
Do you have minimum order quantities (MOQ)?
No, we do not have a strict MOQ. We are built to support your project at any stage, from a single prototype (quantity: 1) to low or high-volume production runs of thousands of parts. We value every project and are committed to helping you bring your designs to life.
Outstanding Achievements and Partnerships
We take pride in our outstanding achievements and strong partnerships. Our commitment to great communication, service, and integrity has led to excellent results.
Join us as a valued partner, and together, we can make a positive impact on CNC.
"Unlock The Potential Of Your Products With Our Top-Notch CNC Solutions."
- info@rollyu.com
- +86-15219497088
- 3/F Building/9, 98 Industrial Park, Wanfeng Community Center Road, Xinqiao Street, Baoan District, Shenzhen City, China
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