Custom CNC Milling Services
LTC Proto delivers high-precision CNC milling services with fast turnaround, supporting prototyping and production for complex custom parts.
- Milled parts ready in as fast as 1 day
- Support for 100 + metals and plastics
- High precision CNC milling up to 0.008 mm
Benefits of LTC Proto's CNC Milling Services
1. High Precision
CNC milling with ±0.008 mm accuracy for demanding geometries and tight-tolerance parts
2. Scalable Production
From single prototypes to 100,000+ parts—consistent quality across all batch sizes
3. Material Versatility
We machine over 100 + types of metals and plastics to meet diverse project needs.
Our Precision CNC Milling Solutions
From basic 3-axis to complex 5-axis projects, our precision CNC milling brings your designs to life with exceptional accuracy and craftsmanship.
3-Axis CNC Milling
3-axis CNC milling offers a balance of precision and cost-effectiveness, perfect for producing simple yet accurate parts.
4-Axis CNC Milling
4-axis milling simplifies multi-sided machining, making it easy to bring your designs to life with precision.
5-Axis CNC Milling
For intricate and complex parts, 5-axis milling unlocks the ability to create even the most advanced designs with ease.
Gallery of CNC Milling Parts
Explore our gallery of CNC milling parts to see the precision, surface quality, and complexity we deliver across every project.
Our CNC Milling Factory
Our CNC milling factory is equipped with advanced machinery and skilled technicians to deliver high-precision parts with fast turnaround.
Request a Fast CNC Milling Quote
Send us your design files and get a CNC milling quote in as fast as 12 hours.
Materials for CNC Milling
Aluminum Alloys
Aluminum alloys offer lightweight, corrosion-resistant, and versatile properties, ideal for applications in aerospace, automotive, and manufacturing industries requiring strength and durability.
- 1050
- 2024
- 5052
- 5083
- 5086
- 5754
- 6060
- 6061
- 6063
- 6072
- 6082
- 7050
- 7075
- A356
- A360
- A380
- C250
Price: $
Build Time: 7-10 business days
Steel
Steel is a strong, durable alloy widely used in construction and automotive industries for its high tensile strength and reliability.
- DC01
- SKD11
- D2
- 45#
- C30
- C40
- S420MC
Price: $$$
Build Time: 5-8 business days
Stainless Steel
- X20Cr13
- 201
- 2132
- 304
- 4212
- 439
- 630
Price : $$$
Build Time: :7-10 business days
Copper
Copper is prized for its excellent electrical conductivity and thermal properties, making it ideal for electrical components and heat exchangers.
- Red Copper
- Phosphor Bronze CuSn5
- Brass HPb63-3
- CuCr1Zr Copper
- UNS C46400 Brass
- SAE 841 Bronze
- Tungsten Copper
- 172 Beryllium Copper
- UNS C87500 Copper
- Phosphor Bronze EN1982
Price: $$$
Build Time: 5-7 business days
Titanium
Titanium provides exceptional strength, corrosion resistance, and lightweight properties, making it perfect for aerospace, medical implants, and high-performance components.
- Tin Bronze
Price: $$$
Build Time: 7-14 business days
Here are some common CNC processing materials for reference. Please reach out to let us know your material requirements, and we’ll provide professional recommendations.
ABS Series
A group of versatile thermoplastics known for their toughness, impact resistance, and ease of machining, commonly used in prototypes and functional parts.
- ABS Sheets
- ABS+PC
- Anti-static ABS
Price: $$
Build Time: 5-7 business days
PC Series
Transparent or opaque plastics offering excellent mechanical properties, high clarity (for transparent), and impact resistance, suitable for various CNC machining applications.
- Transparent PC Sheets/Black
- White PC
Price: $$
Build Time: 5-8 business days
Nylon Series
Strong, wear-resistant thermoplastics ideal for creating durable, high-performance components, available in different colors for various industrial uses.
- Taiwan PA6 Nylon Sheets/Black/Blue
Price: $$
Build Time: 4-6 business days
Fluoroplastics Series
- Teflon A Grade
- Teflon Kossay
Price: /
Build Time: 5-7 business days
Acrylic Series
Clear, rigid plastic material offering optical clarity, impact resistance, and machinability, widely used in transparent prototypes and parts.
- Transparent Acrylic Sheets
Price: $$
Build Time: 6 business days
POM Series
Acetal (POM) plastics known for high dimensional stability, low friction, and wear resistance, commonly used in precision CNC machining of mechanical parts.
- Black POMC
Price: $$
Build Time: 6-9 business days
PEHD Series
High-density polyethylene is a tough and chemically resistant material suitable for CNC machining of durable and impact-resistant parts.
- PEHD500
Price: $$$
Build Time: 10-15 business days
Engineering Plastics Series
- White Ertalon
- PEEK
- PEEK+30% Carbon Fiber
- PEEK+30% Glass Fiber
Price: $$
Build Time: 6 business days
PA66 Series
Nylon PA66 is a strong, heat-resistant material commonly used in automotive, electrical, and industrial parts, offering high strength and durability.
- PA66
Price: $
Build Time: 6 business days
Here are some common CNC processing materials for reference. Please reach out to let us know your material requirements, and we’ll provide professional recommendations.
Surface Finish Options for CNC Milling Parts
We offer a variety of surface finish options for CNC milling parts, from as-milled to anodizing, sand blasting, and more—enhancing both function and appearance.
| Name | Color | Application/Materials | Description |
|---|---|---|---|
As-Machined
|
N/a | Metals / Plastics | Offers a raw surface directly from the machine with visible tool marks, suitable for functional prototypes or internal components that don’t require aesthetic appeal. |
Anodizing
|
Clear, Black, Custom | Aluminum | Enhances corrosion resistance and surface hardness, available in various colors for aluminum parts. |
Sand Blasting
|
Matte Gray | Metals, Plastics | Produces a smooth, matte finish by blasting fine grains of sand at the surface, ideal for improving appearance and creating a uniform texture. |
Powder Coating
|
Custom Colors | Metals | Applies a durable, protective coating to the surface, offering both a vibrant appearance and excellent corrosion resistance. |
Electropolishing
|
Shiny Metal | Stainless Steel, Metals | A process that removes a thin layer of material to create a smooth, shiny surface, often used for stainless steel parts to enhance corrosion resistance. |
Brushing
|
Metallic | Metals | Gives the surface a directional satin finish, commonly used to improve the aesthetics of metal parts. |
Polishing
|
High-Gloss | Metals, Plastics | Achieves a mirror-like finish, commonly used for both aesthetic appeal and to enhance optical clarity on transparent parts. |
Electroplating
|
Silver, Gold, Nickel | Metals | Coats parts with a thin layer of another metal (e.g., nickel, chrome) to improve appearance and corrosion resistance. |
Black Oxide
|
Black | Steel, Iron | Provides a thin, durable black finish for ferrous metals, improving corrosion resistance while maintaining the part’s dimensions. |
Passivation
|
N/A | Stainless Steel | Cleans and protects stainless steel surfaces by removing contaminants and enhancing corrosion resistance. |
Heat Treatment
|
N/A | Metals | Improves the strength and hardness of metal parts by altering their internal structure through controlled heating and cooling processes. |
Passivation
|
N/A | Metals | A chemical process used to improve metal corrosion resistance by removing free iron from the surface. |
Spraying
|
N/A | Metals / Plastics | A coating process that applies a fine mist of material onto a surface to improve appearance or protect against wear. |
CNC Milling Tolerances
LTC Proto delivers consistent, high-quality results by following strict CNC milling tolerance standards. We apply ISO 2768-m for metals and ISO 2768-c for plastics to ensure precise, reliable parts every time.
| 3-Axis | 4-Axis | 5-Axis | |
| Maximum Part Size | 1000 x 500 x 500 mm | 1000 x 500 x 500 mm | 4000 × 1500 × 600 mm |
| Minimum Part Size | 5 x 5 x 5 mm | 5 x 5 x 5 mm | 5 x 5 x 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. |
Why Choose Us
Achieve outstanding accuracy every time. Our advanced CNC milling processes maintain tight tolerances down to ±0.01 mm, ensuring perfect fit and consistent performance.
Keep your projects moving. With local facilities and cutting-edge equipment, LTC Proto delivers parts fast to help you hit your deadlines without delays.
From concept to completion, our experienced engineers are here to guide you. Get practical advice to improve your designs and ensure top-quality results.
Ready to grow with your needs. Whether it's a prototype or a large-volume order, our flexible setup ensures smooth transitions from low to high production.
Applications of CNC Milling
CNC milling is commonly used to create high-precision parts across many industries.
Used to make engine parts, transmission housings, and custom brackets.
deal for producing lightweight structural parts with tight tolerances.
Enables the production of surgical tools, implants, and diagnostic equipment parts.
Used for heat sinks, enclosures, and small connectors with fine features.
Helps create frames, joints, and mounting plates for robot assemblies.
Essential for gears, fixtures, and machine components built for durability.
Consult Our CNC Team
Need help with materials or manufacturability? Our experts are ready to assist you anytime.
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