Online Custom CNC Milling Services
YC Precision is a professional CNC milling company providing precision CNC milling services for metal and plastic parts. From rapid prototyping to full-scale production, we deliver custom CNC milling parts with tolerances as tight as 0.005 mm and lead times as fast as 1 day.
Online CNC Milling Services for Custom Parts
From 3-axis basics to intricate 5-axis projects, our precision CNC milling makes your designs come alive with unmatched accuracy and craftsmanship.
3-Axis CNC Milling Services
Get straightforward CNC milled parts produced with stable accuracy, faster lead times, and controlled machining costs when complex multi-angle machining is not required.
4-Axis CNC Milling Services
Improve machining efficiency and feature alignment with 4-axis CNC milling, especially when your part needs more than one machining direction in a single setup.
5-Axis CNC Milling Services
Our 5-axis CNC milling service supports highly complex and precision-critical components. It is the preferred solution for aerospace, medical, and high-tolerance CNC milling applications.
YC Precision Precision CNC Milling
In Every Production Stage
Prototyping
CNC Milling Prototyping
Accelerate product development with our rapid CNC milling services . We offer fast turnaround times and specialize in quick production of high-quality prototypes and mold tooling, aiding your design verification process.
Production
Low and High-Volume Production CNC Milling
Whether you need small batches or large-scale production, we can offer you both. With stringent tolerance controls and comprehensive capabilities, we adapt to your volume requirements without compromising on quality.
CNC Milling Solutions for Every Industry
YC Precision provides CNC milling services for a wide range of industries, helping customers manufacture precision components from prototype to production. Our engineering team understands the unique requirements of different applications—from lightweight aerospace structures and medical devices to automotive systems and industrial equipment—and recommends machining solutions that balance performance, manufacturability, and cost.
Enclosures & Housings
Enclosures & Housings
Protect electronic and mechanical assemblies with precise internal features.
Brackets & Structural Components
Brackets & Structural Components
Lightweight yet strong parts for supporting mechanical systems.
Hydraulic Manifolds
Heat Sinks
Impellers
Valve Bodies
Machine Fixtures
Medical Components
CNC Milling Materials for Custom Parts
YC Precision provides CNC milling services for a wide range of metals and plastics, helping you match material strength, weight, surface finish, heat resistance, and cost requirements. Whether you need aluminum prototypes, stainless steel components, or engineering plastic parts, our team can help you choose a suitable material for your design and production goals.
Plastics CNC Milling
ABS is strong, durable, and offers good resistance to heat and impact. It’s preferred for automotive components and consumer goods.
ABS Beige(Natural)
ABS Black
ABS Black Antistatic
ABS Milky White
ABS+PC Black
ABS+PC White
Polycarbonate is extremely durable and has high impact resistance, along with excellent clarity, used for bullet-proof glass and protective gear.
PC Black
PC Transparent
PC White
PC Yellowish White
PC+GF30 Black
PMMA, or acrylic, is known for its crystal clarity and weather resistance, making it ideal for outdoor fixtures and display cases.
PMMA Black
PMMA Transparent
PMMA White
POM is strong, with a low friction surface and good dimensional stability, perfect for precision parts in mechanical applications.
Dark brown (coffee) POM 100AF
POM Black
POM Blue
POM White
Nylon is versatile, strong, and wears well against friction, commonly used for gears, bearings, and other wear-resistant surfaces.
PA(Nylon) Blue
PA6 (Nylon)+GF15 Black
PA6 (Nylon)+GF30 Black
PA66 (Nylon) Beige(Natural)
PA66 (Nylon) Black
Polyethylene is lightweight and has high resistance to impact, widely used in packaging and containers.
PE Black
PE White
PEEK is renowned for its high temperature resistance and strength, often used in aerospace and medical implant manufacturing.
PEEK Beige(Natural)
PEEK Black
Polypropylene is tough, has excellent chemical resistance, and is used for automotive parts, containers, and in packaging.
PP Black
PP White
PP+GF30 Black
HDPE is known for its high strength-to-density ratio, resistance to impacts, and is used in making bottles and corrosion-resistant piping.
HDPE Black
HDPE White
HIPS is easy to machine and offers good dimensional stability and impact resistance, suitable for prototyping and modeling.
HIPS Board White
LDPE is soft, flexible, and used in applications where heat sealing is required, such as in tubing and plastic bags.
LDPE White
Metal CNC Milling
Aluminum is lightweight yet strong, with excellent machinability and corrosion resistance. Ideal for aerospace and automotive parts.
Alloys
Aluminum 6061, 6061-T6
Aluminum 2024
Aluminum 5052
Aluminum 5083
Aluminum 6063
Aluminum 6082
Aluminum 7075, 7075-T6
Aluminum ADC12 (A380)
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Copper is known for its superior electrical conductivity and thermal properties, making it perfect for electrical components and heat exchangers.
Alloys
Copper C101(T2)
Copper C103(T1)
Copper C103(TU2)
Copper C110(TU0)
Beryllium Copper
Brass is durable and has a low friction coefficient, which makes it suitable for fittings, tools, and musical instruments that require precision.
Alloys
Brass C27400
Brass C28000
Brass C36000
Bronze is highly resistant to corrosion and metal fatigue, favored for bearings, bushings, and marine hardware.
Alloys
Tin Bronze
Steel is an alloy with high tensile strength and durability, commonly used in construction and automotive industries for its robustness.
Alloys
Steel 1018, 1020, 1025, 1045, 1215, 4130, 4140, 4340, 5140, A36
Die steel
Alloy steel
Chisel tool steel
Spring steel
High speed steel
Cold rolled steel
Bearing steel
SPCC
Stainless steel is renowned for its corrosion resistance, making it a prime choice for medical devices and food processing equipment.
Alloys
Stainless Steel SUS201
Stainless Steel SUS303
Stainless Steel SUS 304
Stainless Steel SUS316
Stainless Steel SUS316L
Stainless Steel SUS420
Stainless Steel SUS430
Stainless Steel SUS431
Stainless Steel SUS440C
Stainless Steel SUS630/17-4PH
Stainless Steel AISI 304
Magnesium is the lightest structural metal, offering high strength-to-weight ratios, perfect for automotive and aerospace applications where weight is critical.
Alloys
Magnesium Alloy AZ31B
Magnesium Alloy AZ91D
Titanium boasts the highest strength-to-density ratio among metals, highly resistant to corrosion and fatigue, ideal for aerospace, medical, and marine applications.
Alloys
Titanium Alloy TA1
Titanium Alloy TA2
Titanium Alloy TC4/Ti-6Al 4V
CNC Milling Surface Finishes
Gain access to quality surface finishing for custom CNC milled parts to remove aesthetic flaws and improve the appearance of your products. We also provide rigid protection and additional resistance and strength to your parts through superior surface finishes.
As machined finish leaves the surface straight from the CNC machine, providing a cost-effective option with tool marks.
Anodizing increases corrosion resistance and wear properties, while allowing for color dyeing, ideal for aluminum parts.
Polishing
Polishing achieves a high gloss finish, reducing surface roughness and enhancing the aesthetic appeal of metals.
Sand blasting uses pressurized sand or other media to clean and texture the surface, creating a uniform, matte finish.
Tumbling smooths and polishes small parts by friction and abrasion in a barrel, offering a consistent but slightly textured finish.
Electropolish is a chemical process that smooths and brightens surfaces while improving corrosion resistance.
Alodine coating provides corrosion protection and improves paint adhesion, mainly used on aluminum surfaces.
Heat treatment alters the mechanical properties of metal to increase its hardness, strength, or ductility.
A brushed finish creates a unidirectional satin texture, reducing the visibility of marks and scratches on the surface.
Powder coating applies a thick, wear-resistant layer with excellent color and texture options, suitable for a variety of surfaces.
Electroplating bonds a thin metal layer onto parts, improving wear resistance, corrosion resistance, and surface conductivity.
Black oxidize is a conversion coating for ferrous metals that improves corrosion resistance and minimizes light reflection.
CNC Milling Service Tolerances
5 bussiness days for most projects.
CNC milling tolerances define how precisely part dimensions are controlled during machining. Our precision CNC milling services follow ISO 2768-m for metals and ISO 2768-c for plastics, delivering stable, repeatable dimensional accuracy across 3-axis, 4-axis, and 5-axis CNC milling.
| 3-AXIS | 4-AXIS | 5-AXIS | |
|---|---|---|---|
| Maximum Part Size | 1000 × 500 × 500 mm | 1000 × 500 × 500 mm | 4000 × 1500 × 600 mm |
| Minimum Part Size | 5 × 5 × 5 mm | 5 × 5 × 5 mm | 5 × 5 × 5 mm |
| General Tolerances | ±0.1 mm | ±0.1 mm | ±0.05 mm |
| Lead Time | Delivery of simple parts can be as fast as 1 day. | 5 business days for most projects. | 5 business days for most projects. |
CNC Milling Design Guidelines
| RECOMMENDED SIZE | |
|---|---|
| Radii | Internal radii should be at least 1/3 of the cavity depth. Use larger radii whenever possible. |
| Threads and Tapped Holes | Diameter Φ 1.5–5 mm, depth: 3 times the diameter. Diameter Φ 5 mm or larger, depth: 4–6 times the diameter. YC Precision can produce threads of any specification and size as required by the customer. |
| Minimum Wall Thickness | For metals: 0.8 mm; For plastics: 1.5 mm. Thicker walls ensure better structural integrity. |
| Text | CNC Milling: Minimum width of 0.5 mm and depth of 0.1 mm. YC Precision can create standard text via CNC engraving or laser engraving as per customer requirements. |
| Holes | Minimum diameter of 1 mm. Hole depth should not exceed 4 times the diameter for best results. |
| Pocket Depth | Keep pocket depth within 4× the pocket width whenever possible. Deep pockets require longer cutting tools, increasing machining time and reducing accuracy. |
| Internal Corners | Avoid perfectly sharp internal corners. Adding fillets allows larger cutting tools, improving machinability and surface finish. |
| Slots | Avoid narrow, deep slots whenever possible. High aspect-ratio slots require smaller tools and longer machining cycles. |
| Part Setup | Design parts to minimize multiple setups. Fewer setups improve positional accuracy and reduce production time. |
YC Precision Platform
Get an
Instant CNC Milling Quote Online
Upload your CAD files and receive an instant CNC milling quote, lead time estimate, and free manufacturability feedback from our engineering team. We’ll identify potential machining issues before production to help you reduce costs and improve part quality.
- Reduce Machining Costs
- Optimize Tolerances
- Minimize Multiple Setups
- Avoid Thin Walls
- Optimize Pocket Depths
- Improve Internal Corner Radii
Why
Engineers Choose Our CNC Milling Services
As a professional CNC milling service factory, YC Precision delivers precision machining backed by in-house equipment, experienced engineers, and stable lead times for global customers.
/01
Precision
CNC Milling Parts
Our precision CNC milling services with tolerances as tight as ±0.01 mm. Our advanced CNC milling machines ensure consistent accuracy for custom metal and plastic parts.
/02
Fast & Scalable
CNC Milling Production
As a factory-direct CNC milling service supplier, we reduce lead times without compromising quality. Simple CNC milled parts can be delivered in as fast as 1 day.
/03
Engineering
Support
As an experienced CNC milling company, our engineers provide DFM feedback and machining guidance to optimize designs for cuostom CNC milling services, helping reduce cost and improve manufacturability.
CNC Milling Process for Custom Part Manufacturing
CNC milling uses computer-controlled rotating cutting tools to remove material from a stationary workpiece. By moving the cutting tool or workpiece along multiple axes, CNC milling produces flat surfaces, pockets, slots, holes, contours, and complex 3D geometries with high precision. It is widely used for prototypes, functional components, molds, fixtures, and production parts across various industries.
Typical CNC Milling Process:
| Step | What Happens |
|---|---|
| 1 | CAD Review Engineers review your CAD file, material selection, tolerance requirements, and surface finish specifications. |
| 2 | Machine Setup The workpiece is securely clamped onto the machine table, cutting tools are installed, and the CNC program is loaded and verified. |
| 3 | Milling & Inspection Rotating cutting tools remove material according to the programmed toolpaths. Finished parts are inspected to verify dimensions, tolerances, and surface quality before delivery. |
Advantages
Advantages of CNC Milling
CNC milling offers numerous advantages for manufacturing:
- High Precision: CNC milling machines can produce parts with very tight tolerances, ensuring high accuracy and consistency in every piece.
- Complex Geometries: With the ability to move in multiple axes, CNC milling can create intricate and complex shapes that are difficult or impossible to achieve with manual machining.
- Efficiency: Automated operation allows for continuous production, reducing lead times and increasing productivity. Multiple parts can be produced with minimal downtime.
- Flexibility: CNC milling can work with a wide range of materials, including metals, plastics, and composites. This versatility makes it suitable for various applications.
- Repeatability: Once a design is programmed, the machine can reproduce identical parts over and over, ensuring uniformity and reducing the risk of human error.
- Cost-Effective: While the initial setup can be expensive, the efficiency and precision of CNC milling reduce overall production costs, especially for large quantities.
- Safety: CNC machines operate with minimal human intervention, reducing the risk of accidents and enhancing workplace safety.
Applications
Applications of CNC Milling
CNC milling is widely used to produce a variety of precision parts and components:
- Engine Components: Used in the manufacturing of engine blocks, cylinder heads, and pistons, ensuring high performance and durability in automotive and aerospace industries.
- Gear Components: Essential for producing gears, splines, and shafts with tight tolerances, used in machinery and automotive applications.
- Medical Implants: Creates precise and high-quality implants such as hip joints, dental implants, and surgical screws for the medical field.
- Electronic Housings: Produces enclosures for electronic devices, ensuring proper fit and protection for circuit boards and components.
- Custom Prototypes: Allows for the rapid development and testing of prototypes, helping designers refine their products before mass production.
- Tooling and Dies: Essential for creating molds, dies, and cutting tools used in various manufacturing processes.
- Complex Aerospace Parts: Used for producing turbine blades, brackets, and other intricate parts that require high precision and strength.
FAQs
What kinds of CNC milling machines does YC Precision have?
As an experienced CNC milling company, our engineers provide DFM feedback and machining guidance to optimize designs for cuostom CNC milling services, helping reduce cost and improve manufacturability.
The 3-axis machines are perfect for simple operations, handling basic cutting tasks along the X, Y, and Z axes.
At YC Precision, we have a variety of CNC milling machines to meet diverse manufacturing needs. Our inventory includes 3-axis, 4-axis, and 5-axis CNC milling machines.
Our 4-axis machines add an extra rotational axis, allowing for more complex geometries and more efficient production of parts with features that require continuous machining around a fourth axis.
These machines are capable of machining in five different axes simultaneously, reducing the need for multiple setups and ensuring exceptional accuracy and quality in every component we produce.
What tolerances can you achieve with CNC milling?
Our CNC milling tolerances depend on machine type, material, and part geometry.
Standard tolerances follow ISO 2768-m (metals) and ISO 2768-c (plastics)
Typical general tolerances: ±0.1 mm
High-precision 5-axis milling can achieve tolerances as tight as ±0.01 mm for critical features
For tighter tolerances, we recommend specifying requirements directly on the drawing so our engineers can optimize tooling, inspection, and cost.
When should I choose 3-axis, 4-axis, or 5-axis CNC milling?
- 3-axis milling is ideal for simple geometries and flat features
- 4-axis milling enables machining around multiple sides with fewer setups
- 5-axis milling is best for complex geometries, tight tolerances, and parts requiring multi-angle machining
Choosing the right axis configuration can significantly reduce lead time and improve accuracy.
How fast can you deliver CNC milled parts?
Lead times depend on part complexity and machining axis:
Simple 3-axis parts can be delivered in as fast as 1 day
Most CNC milling projects are completed within 5 business days
Expedited options are available for urgent production needs.
CNC milling vs CNC turning: how do I choose?
CNC milling is ideal for complex geometries, slots, pockets, and contours, while CNC turning is best suited for cylindrical parts such as shafts and bushings.
If your part includes both rotational and prismatic features, combining milling and turning may be the most efficient solution.
What are the Differences Between Vertical and Horizontal CNC Milling?
Vertical CNC milling machines, with their vertically oriented spindles, are ideal for precision work on smaller components, offering excellent visibility and versatility for tasks like drilling and boring. Horizontal CNC milling machines, featuring horizontally oriented spindles, excel in handling larger, heavier workpieces and provide enhanced stability and efficient chip removal. For projects requiring extensive material removal and high durability, horizontal milling is preferred. In contrast, vertical milling is best for intricate, detailed work. Choosing between these types depends on your specific CNC milling services needs, whether for precision or bulk machining.
What is tool offset in CNC milling?
In CNC milling, tool offset refers to the adjustment made to account for the tool’s dimensions—specifically its length and diameter—during the machining process. These offsets ensure that the cutting tool operates with precision relative to the workpiece. By accurately setting tool offsets, a machinist can determine the correct starting point for machining, ensuring that the part is cut to the exact specifications required. Proper tool offsets are crucial for achieving accurate and consistent results in CNC milling operations.
What is CNC milling?
CNC milling is a subtractive manufacturing process where material is removed from a solid block using rotating cutting tools controlled by computer programs.
CNC milling is widely used to produce precision parts with complex geometries, tight tolerances, and consistent quality. It supports multi-axis machining (3-axis, 4-axis, and 5-axis), allowing features such as pockets, slots, holes, and complex contours to be machined efficiently.
Finally, our advanced 5-axis CNC milling machines offer the highest level of precision and versatility, enabling the creation of intricate parts with complex shapes and angles.
At YC Precision, CNC milling is commonly used for functional prototypes, low-volume production, and end-use parts across industries such as automotive, aerospace, and industrial equipment.
What types of materials do CNC mills use?
CNC mills can work with a diverse range of materials. Metals frequently used include aluminum, brass, and steel, each offering different properties for various applications. Additionally, CNC milling is effective on various plastics such as ABS, acrylic, polycarbonate, and polypropylene, which are valued for their versatility and ease of machining. This variety of materials allows CNC mills to be employed in numerous industries, from aerospace to consumer products, making them a highly adaptable tool for manufacturing.
What is the difference between vertical and horizontal CNC milling?
The main difference lies in the spindle orientation. A vertical CNC milling machine positions the spindle above the workpiece, making it well suited for face milling, pocket machining, drilling, and general-purpose machining. It is the most common choice for prototypes and low- to medium-volume production. A horizontal CNC milling machine uses a horizontally mounted spindle, allowing chips to evacuate more efficiently during heavy cutting. This configuration is often preferred for machining large parts, multiple-sided components, and high-volume production where faster material removal and improved productivity are important.
What are the main components of a CNC milling machine?
A CNC milling machine consists of several key components that work together to achieve precise machining results. The machine base provides structural stability, while the spindle rotates cutting tools at high speed to remove material. The worktable securely holds the workpiece and moves along the X, Y, and Z axes. Other essential components include the CNC controller, which interprets machining programs, the tool holder, automatic tool changer (ATC), coolant system, and workholding fixtures. Each component plays an important role in maintaining machining accuracy, surface quality, and production efficiency.
What cutting tools are used in CNC milling?
CNC milling uses a variety of cutting tools depending on the material and feature being machined. End mills are commonly used for profiling, pocketing, and slotting, while face mills quickly machine large flat surfaces. Ball nose end mills create smooth 3D contours and curved surfaces, and drills are used for hole making. Chamfer mills, thread mills, and specialty cutters are selected for specific machining operations. Choosing the proper cutting tool helps improve surface finish, dimensional accuracy, and machining efficiency.
How can Design for Manufacturability (DFM) reduce CNC milling costs?
Design for Manufacturability (DFM) focuses on creating parts that are easier and more economical to machine. Simple design changes—such as increasing internal corner radii, avoiding deep pockets, maintaining adequate wall thickness, and specifying standard hole sizes—can significantly reduce machining time and tooling requirements. Applying realistic tolerances only where necessary also lowers inspection costs. Optimizing a design before production not only reduces manufacturing costs but also improves part quality and shortens lead times.
