Metal CNC machining

Precision-driven CNC machining backed by expert engineering support, optimized processes, and reliable on-time delivery.

XTPROTO CNC Metal Machining Services

Xtproto provides precision CNC metal machining services for functional prototypes and production-grade components. We focus on dimensional accuracy, structural integrity, and repeatable performance—ensuring every part meets exact engineering requirements.

With optimized production workflows and a robust quality management system, we deliver fast turnaround without compromising consistency. From complex prototype builds to medium- and high-volume manufacturing, we support a wide range of metals and surface finishing options to meet demanding industry standards.

Different applications demand different material properties. That’s why we offer an extensive selection of machinable metals to match your structural, thermal, and mechanical requirements.

Your Metal Material Choices

Choosing the right metal material is just as important as the machining process itself. Different metals offer different strengths, weight, corrosion resistance, and cost advantages, so the best choice depends on your specific application. We work with a wide range of materials and can help you select the most suitable option based on performance requirements and budget.

Aluminum

Aluminum is the ideal choice for lightweight, high-precision parts. It combines fast machining and high strength with excellent finishing options, making it perfect for rapid prototyping, enclosures, and functional components that require both durability and a professional look.

Stainless steel

Stainless steel is the premier choice for durability in harsh environments. Though tougher to machine than aluminum, it offers superior resistance to wear, moisture, and chemicals, ensuring long-term stability for mechanical, medical, and outdoor components.

Brass

Brass is one of the best materials among metals for machining. It allows for the creation of smooth edges, minimizes tool wear, and enables the machining of precise threads, making it commonly used in the manufacture of small, precision CNC parts.

Copper

The main reason for choosing copper is its excellent electrical and thermal conductivity, not its ease of machining. Although careful tool selection is required due to copper's soft texture, it is ideal for CNC machined parts that require efficient heat dissipation or electrical conductivity.

Titanium

Titanium possesses the advantages of being lightweight, strong, and highly corrosion-resistant. It is more challenging to machine than steel or aluminum, but it is unmatched for applications where performance and reliability are critical.

Mild steel

Mild steel is a cost-effective option for general-purpose CNC machining. It possesses good machinability and mechanical strength, making it suitable for functional parts where strict requirements for corrosion resistance or weight are not necessary.

Alloy steel

When standard carbon steel is not enough , alloy steel is used. By adding alloying elements, alloy steel provides higher strength, fatigue resistance, or wear resistance for CNC-machined mechanical parts.

Tool steel

Tool steel is engineered for hardness and wear resistance. It is commonly used for CNC-machined molds, dies, and tooling components that operate under high stress or repeated cycles.

Spring steel

Spring steel is designed to return to its original shape after deformation. In CNC machining, it is typically used for thin or flexible components that require consistent elasticity and fatigue resistance. Best for: springs, clips, flexible mechanical elements

Bronze

Bronze is valued for its wear resistance and low friction properties. It performs well in CNC machining for components that involve sliding contact or long-term mechanical movement.

Steel

Carbon steel is a practical choice for CNC machining due to its predictable cutting performance and cost efficiency. Multiple grades make it adaptable to different part requirements, from easy-to-machine components to higher-strength structures.

Magnesium

Magnesium is one of the lightest structural metals that can be used in CNC machining. It machines extremely fast and is ideal for weight-sensitive applications, though special safety considerations are required during cutting.

CNC Metal Machining Surface Finishes

The right Surface Finishes can make a big difference in how your CNC metal parts perform and look. From anodizing and powder coating to polishing and passivation, we offer finishing options that improve corrosion resistance, wear performance, and overall appearance. Whether you need added protection or a clean, professional finish, we’ll help you choose the best option for your application.

Alodine

Alodine treatment enhances corrosion resistance of aluminum parts and improves paint adhesion without significantly altering part dimensions.

Heat Treatment

Heat treatment modifies the internal structure of metal components to improve hardness, strength, and mechanical performance. It is commonly applied when enhanced structural properties are required for demanding applications.

Polishing

Mechanical polishing reduces surface roughness and delivers a smooth, reflective finish. It is commonly used when improved visual appeal or lower surface friction is required.

Brushed Finish

A brushed finish produces a directional satin texture that minimizes visible scratches and fingerprints, offering a refined yet industrial appearance.

Anodizing

Anodizing forms a protective oxide layer on aluminum surfaces through an electrochemical process, significantly improving corrosion resistance and wear performance. It also allows for decorative color finishes.

Powder Coating

Powder coating creates a durable and uniform protective layer with excellent resistance to wear and environmental exposure. It provides extensive color and texture flexibility for both functional and aesthetic needs.

Electropolishing

Electropolishing is an electrochemical surface refinement process that smooths microscopic irregularities, enhances brightness, and improves corrosion resistance, making it ideal for high-cleanliness or decorative applications.

Sand Blasting

Sand blasting propels fine abrasive media onto the surface to remove minor imperfections and create a consistent matte texture. It is often used as a pre-treatment for anodizing or coating processes.

Electroplating

Electroplating deposits a thin metallic layer onto a component to enhance corrosion resistance, improve conductivity, or achieve specific surface characteristics depending on the plating material selected.

Passivation

Passivation is a chemical treatment for stainless steel that removes surface contaminants and improves corrosion resistance without altering dimensions.

As-Machined Finish

This finish maintains the surface directly after CNC machining, retaining visible tool paths. It is the most economical option and suitable for functional components where cosmetic appearance is not critical.

Black Oxide

Black oxide is a chemical conversion coating primarily used on ferrous materials to enhance corrosion resistance while reducing surface reflectivity, often applied to industrial or mechanical components.

Advanced CNC Metal Machining Capabilities

After selecting the right metal and surface finish, precise metal CNC machining becomes essential to transform design intent into production-ready components. Xtproto invests in advanced CNC machines and precision manufacturing technologies to optimize speed, consistency, and scalability. Our metal CNC machining services deliver high-precision parts that meet strict dimensional tolerances and functional requirements.

Precision & Tolerance Control: We can handle standard tolerances from ±0.10 mm down to ±0.05 mm, and tighter tolerances are available on request. Parts can be made according to ISO 2768-mK standards, with critical features machined to even stricter specs if needed.

Multi-Axis Machining Expertise: Our multi-axis CNC capabilities let us tackle complex shapes and tight-tolerance parts. We can machine multiple faces and angles in a single setup, ensuring excellent accuracy and smooth surfaces.

Our Processes: CNC milling, turning, boring, drilling, threading, and tapping—whatever your design calls for, we have the tools and expertise to make it happen.

Tolerance Capabilities

At Xtproto, we understand that precision is everything. For most CNC metal machining projects, we hold standard tolerances between ±0.10 mm and ±0.05 mm, and for critical features, we can achieve tighter tolerances down to ±0.02 mm.

We apply the right type of tolerance based on your part’s function and geometry—whether it’s standard limits, bilateral tolerances, or GD&T for complex features. Proper tolerance planning helps balance cost, lead time, and performance, ensuring your parts fit, function, and assemble perfectly.

Metal Parts We Machined

Consumer Product Simple Stainless Steel Parts

Multi-Axis CNC Machining (3, 4 & 5-Axis)

With multi-axis machining, we can complete multiple sides and angles in a single setup, which means higher accuracy, smoother surfaces, and faster turnaround. Whether it’s a prototype or high-precision production part, we can bring your designs to life exactly as intended.

3-Axis CNC Machining

Handles most flat surfaces and simple curves efficiently. Ideal for standard milling and turning jobs where accuracy and reliability are key.

4-Axis CNC Machining

Adds rotation around one axis, allowing multiple faces or angled features to be machined in a single setup. Saves time while maintaining precision.

5-Axis CNC Machining

Moves along multiple axes simultaneously, perfect for complex curves, pockets, and tight-tolerance parts. Great for parts with challenging geometries.

Project Management

At Xtproto, we follow a structured project workflow to make sure every CNC metal machining project runs smoothly—from the first review to final delivery. Our process-driven approach helps reduce risks, improve efficiency, and deliver consistent results every time.

End-to-End Workflow

We handle every step of your CNC metal machining project, so nothing falls through the cracks:

Reviewing your technical drawings and checking feasibility
Analyzing costs and optimizing processes
Scheduling production and tracking milestones
Sourcing materials and coordinating with suppliers
Conducting final inspections and managing documentation
Transparent Communication & On-Time Delivery

We keep you informed at every stage and coordinate across teams to ensure deadlines are met without compromising quality or precision.

Our Manufacturing Facility

Xtproto operates a modern CNC machining facility covering 160,000 ft², staffed with a skilled team of engineers and technicians. From prototyping to full-scale production, our factory is set up to handle projects of all sizes—and you can see it for yourself on our Factory Tour.

Advanced Equipment & Production Capability

CNC milling, turning, and multi-axis machining
High-precision inspection and measurement tools
Flexible production lines that support small to medium batches

Quality & Process Management

ISO-certified quality management systems
Standardized workflows and process controls
Continuous improvement to make sure results stay consistent

Serving clients across aerospace, automotive, medical, and industrial sectors, our facility brings together technical expertise, reliable processes, and modern equipment to deliver high-quality metal components on time—every time.

Quality Management & Certification

Quality is at the core of everything we do at Xtproto. Our quality team carefully reviews every CNC metal part design and verifies incoming materials to make sure they meet strict standards from the start. Each component is checked for both dimensions and surface finish using advanced inspection equipment such as CMMs, optical and laser measurement systems, and precision gauges. All inspection results are recorded and available in detailed quality reports for full transparency.

We are ISO 9001 certified and fully support customer-specific quality requirements. You can learn more about our Quality Assurance system and manufacturing certifications to see how we maintain consistent standards across every project. From material verification to final inspection, our structured processes, experienced team, and modern inspection tools ensure every CNC metal part meets the precision, reliability, and traceability your application demands.

Engineering Expertise & Fast Delivery

Our experienced engineering team is involved in every project, guiding you from the first design and prototype all the way to full-scale production. They review part geometry, suggest the best materials, and optimize manufacturing processes to make sure every component meets high standards for precision, functionality, and durability. By working closely with you, we turn ideas into manufacturable parts efficiently, cutting down on design iterations and avoiding potential production issues.

On top of that, our streamlined production and fast delivery capabilities keep your projects on track. With advanced CNC machines and optimized workflows, we can handle everything from small-batch prototypes to medium-volume production smoothly. This means you get precision parts quickly, without compromising quality—helping you hit tight deadlines, speed up product development, and stay ahead of the competition.

Rapid Prototyping

Our rapid prototyping services allow you to bring new designs to life quickly and efficiently. From initial CAD concepts to fully functional prototypes, our skilled team and advanced CNC equipment ensure high precision, excellent surface finish, and functional accuracy. By producing prototypes rapidly, we help you test, validate, and refine your designs early in the development cycle, reducing costs and accelerating time-to-market.

High-Volume CNC Machining

For medium to high-volume cnc machining, we keep the process simple, efficient, and consistent. With advanced CNC machines, optimized workflows, and strict quality checks in place, we make sure every part meets your specifications—even across large production runs. The result is reliable, high-precision components delivered on time and at a competitive cost, so you can launch products, scale production, and stay competitive with confidence.

Get Your Precision CNC Parts Today

Partner with Xtproto to bring your metal components from concept to production with unmatched accuracy and reliability. Submit your design today and receive a fast, transparent quote so your project can move forward without delay.

Metal Machining

Metal machining is all about turning raw metal into precise parts using CNC machining and other precision tools. We cut, form, and finish metal blocks or bars to get exactly the shape and measurements your design calls for.

These services are used in industries like aerospace, consumer electronics, medical devices, and smart machinery—anywhere you need parts that are accurate, consistent, and reliable. CNC metal machining is one of the best ways to go from a prototype to full production while keeping high precision and performance.

Why Choose Xtproto?

Premium Support

Expert Team

Flexible Solutions

Cost-Effective

Precision & Accuracy

Fast & Scalable Production

CNC Machining Metal Methods

CNC Milling

A precision machining process where computer-controlled cutting tools remove material from a solid workpiece to create complex shapes, high-accuracy parts, and smooth finishes, suitable for metals, plastics, and composites.

CNC Turning

Material is removed as a cutting tool contacts a high-speed rotating workpiece. This process is ideal for producing round or tubular parts, and can also create threads, internal holes, and other detailed features.

CNC Drilling

Material is removed as a rotating cutting tool bores a stationary workpiece, creating precise holes for screws, bolts, and other fastening components.

CNC Grinding

A high-speed rotating abrasive wheel removes material from a workpiece to achieve smooth surfaces, tight tolerances, and precise dimensions, often used for finishing metal and hard materials.

CNC Swiss Machining

A precision process where a Swiss-style lathe produces complex, small-diameter metal parts with tight tolerances, ideal for high-precision components in medical, automotive, and electronics industries.

Sinker EDM & Wire EDM

Sinker and wire EDM are precision techniques for shaping metal parts, using controlled electrical energy to cut or remove material for complex and highly accurate components.

CNC Metal Machining Industries & Applications

Robotics

Industrial machinery

Consumer electronics

Aerospace & Aviation

Medical

Automotive

Frequently Asked Questions

How much does metal machining cost?

Metal machining cost depends on the material, part complexity, tolerance requirements, and production volume. Softer metals like aluminum usually cost less, while harder materials such as stainless steel or titanium are more expensive to machine.

What metal cannot be cut?

Most metals are CNC-machinable with the right setup. However, for ultra-hard or specialized materials, we utilize advanced tooling and alternative processes to overcome the challenges that standard machining cannot handle.

What is the easiest metal to machine?

Due to its low cutting resistance and high processing efficiency, aluminum is one of the easiest metals to machine. Brass and some low-carbon steels are also relatively easy to machine.

What are some pros and cons of metal CNC machining?

Metal CNC machining offers high precision, repeatability, and strong material performance. However, it can generate material waste and higher costs for complex parts or tight tolerances.

Request Your Free CNC Machining Quote Today

After receiving your drawings, our engineers will analyze your custom CNC machining parts right away. We actively work with you to clarify all details before providing a quote that is both economical and accurate.