CNC Machining

Accelerate prototyping, product development and low to mid volume production with a faster, easier way to get precision machined parts. Upload your designs for instant pricing and DFM feedback. And receive your parts as quickly as two days.

Services

CNC Machining Services

CNC Milling

3, 4 and 5-axis machining capabilities for simple and complex geometries.

CNC Turning

Standard and live tooling capabilities for cylindrical parts such as pins, shafts, and spacers.

Electrical Discharge Machining

Wire and Sinker EDM are non-contact machining methods for cutting deep pockets, complex internal features, and holes with a keyway.

What is CNC Machining?

CNC (Computer Numerical Control) machining is a highly efficient and precise manufacturing process that employs automated, high-speed cutting tools to shape and refine workpieces made from metals or plastics. The primary types of CNC machines include 3-axis, 4-axis, and 5-axis milling machines, lathes, and routers, each offering different levels of complexity and capability. In CNC machining, the approach to cutting can vary: the workpiece might stay fixed while the cutting tool moves, the cutting tool might stay stationary while the workpiece rotates and shifts, or both the tool and workpiece might move simultaneously to achieve the desired geometry.

When machinists receive a CAD (Computer-Aided Design) model, also known as a 3D file, they begin by programming the tool paths based on this design. Expert machinists can optimize these tool paths to reduce machining costs while ensuring tight tolerances are met. CNC machines can precisely cut a wide array of materials, including metal alloys, plastics, wood, stone, and ceramics. This versatility allows for the production of custom machined parts across a multitude of industries such as automotive, aerospace, medical, robotics, electronics, and industrial manufacturing.

CNC Machining Tolerances

Feature	Description
Maximum Part Size	Milled parts up to 80” x 48” x 24” (2,032 x 1,219 x 610 mm). Lathe parts up to 62” (1,575 mm) length and 32” (813 mm) diameter.
Standard Lead Time	3 business days
General Tolerances	Tolerances on metals will be held to +/- 0.005″ (+/- 0.127 mm) in accordance with ISO 2768 unless otherwise specified. Plastics and composites will be +/- 0.010”.
Precision Tolerances	Xometry can manufacture and inspect to tight tolerances, including sub +/- 0.001″ tolerances, per your drawing specifications and GD&T callouts.
Minimum Feature Size	0.020” (0.50 mm). This may vary depending on part geometry and chosen material.
Threads and Tapped Holes	Xometry can accommodate any standard thread size. We can also machine custom threads; these will require a manual quote review.
Edge Condition	Sharp edges are broken and deburred by default
Surface Finish	The standard finish is as-machined: 125 Ra or better. Additional finishing options can be specified when getting a quote.

How to work with us

1.Sending CAD Files To Email or LinkedIn

First, you can send CAD files and detailed information (material, quan-tity, tolerance, etc.) to us Email or Linkedin .

2.Manufacturability Analysisand Offering Quotation

Secondly, we will analyze manufactur-ability based on drawings of productsand give you a favorable quotation.

3.Start manufacturing!

Thirdly, we will start manufacturing process once all relevant deatials are fully confirmed.

4.Parts are Completedand Shipped

Finally, we will carefully pack and shipthe goods when the products are completed.

LET’S DO IT!

We Are Here For You

Ready to Get a Custom CNC Machining Services? Free shipping available for domestic CNC Machining orders ; learn more!

CNC Machining Design Tips

Feature	Design Consideration
Internal corner fillets	Ensure that internal corner fillets have a radius 0.020” – 0.050” greater than a standard drill size. Maintain a drill diameter to depth ratio of 1:6 (1:4 recommended) for internal corner radii.
Floor fillets	Size floor fillets smaller than corner fillets, allowing the same tool to efficiently clear material from the interior.
Undercuts	Design undercuts to standard sizes, positioning them away from corners for accessibility by the cutting tool.
Tapped/threaded hole depth	Extend tool clearance slightly beyond the tapped hole depth to guarantee complete threads.
Complexity	Minimize the number of small cuts to reduce CNC machining costs. Only incorporate necessary features to strike a balance between function and aesthetics.

* Quoting response times reflect requests received during business hours, requests received outside business hours will be addressed the following business day.

Finishing Options for CNC Machining

Name	Applicable Materials	Colors	Can Be Applied with
Alodine	Aluminum, Magnesium	Golden, Clear	Chemical treatment
Anodizing	Aluminum, Titanium	Various	Dyes and chemicals
Black Oxide	Ferrous Metals (Steel, Stainless Steel)	Black	Oxidation process with hot and cold baths
Electroless Nickel Plating	Various Metals	Silver	Chemical deposition without electrical current
Electropolishing	Stainless Steel, Aluminum	Silver, Bright	Electrolytic process
Hand Polishing	Metals (Aluminum, Stainless Steel, etc.)	Customizable	Manual polishing with abrasive materials
Media Blasting	Metals, Plastics	Natural Finish	High-pressure air and abrasive beads
Nickel Plating	Various Metals	Silver	Electroplating process
Passivation	Stainless Steel	Transparent	Chemical treatment
Powder Coating	Metals (Steel, Aluminum, etc.)	Wide Range	Powder particles and heat
Tumbling	Metals (Aluminum, Brass, etc.)	Matte Finish	Abrasive media and rotating barrel
Vapor Polishing	Plastics, Metals	Clear, Smooth	Vaporized solvent and polishing agents
Zinc Plating	Steel, Iron	Silver	Electroplating process

Need Help?

FAQs

How does CNC machining operate?

CNC machining operates through computer numerical control, where automated tools and machinery follow precise programming to cut, shape, and assemble materials with high accuracy.

• In what ways does CNC machining stand apart from traditional machining methods?

Compared to traditional machining, CNC machining offers greater precision and efficiency, as it is computer-controlled and eliminates the need for manual intervention in each step of the process.

• Which industries commonly employ CNC machining for their production needs?

The history of CNC machining dates back to the 1940s, evolving from early numerical control systems. Over time, technological advancements have refined CNC machining into a widely adopted manufacturing method.

• What is the historical background of CNC machining and its evolution over time?

To ensure precision and quality, inspection options for CNC machined components include coordinate measuring machines (CMM), optical measurement systems, and rigorous visual inspections.

• What options are available for inspecting the precision and quality of CNC machined components?

To ensure precision and quality, inspection options for CNC machined components include coordinate measuring machines (CMM), optical measurement systems, and rigorous visual inspections.

• What tolerances do you maintain for machined parts to ensure accuracy and reliability?

Tolerances for machined parts vary based on project requirements but are consistently maintained to ensure accuracy and reliability in the final product.

• Could you elaborate on your CNC machining and turning capabilities in terms of materials, sizes, and complexities?

CNC machining and turning capabilities cover a wide range of materials, sizes, and complexities, including metals, plastics, and composites, with the ability to handle both small and large-scale projects.

• Do you provide Quick-Turn CNC Machining services for projects with time-sensitive requirements?

Yes, Quick-Turn CNC Machining services are available to meet the time-sensitive requirements of projects, providing efficient and rapid manufacturing solutions.

Expanding Horizons: The Versatility of CNC Machining Services

Computer Numerical Control (CNC) machining has revolutionized the manufacturing landscape, offering unparalleled precision, efficiency, and versatility. This technology enables the automation of complex and intricate tasks, ensuring high levels of accuracy and repeatability. CNC machining services are integral to a variety of industries, each benefiting from the unique capabilities of this advanced manufacturing method.

Aerospace Industry

In the aerospace sector, CNC machining is indispensable for producing critical components that demand the highest levels of precision and durability. Parts such as turbine blades, engine components, and structural elements are crafted from high-performance materials like titanium and aluminum alloys. The stringent safety and performance standards in aerospace manufacturing necessitate the use of CNC machines, which can achieve the exacting tolerances and surface finishes required for flight-ready parts.

Automotive Industry

The automotive industry relies heavily on CNC machining for both prototyping and production. Engine blocks, transmission housings, and other vital components are machined to precise specifications to ensure optimal performance and longevity. CNC machining also plays a crucial role in the development of new vehicle models, allowing manufacturers to rapidly prototype and test new designs. The ability to produce high-quality, consistent parts quickly and efficiently is a significant advantage in this competitive industry.

Medical Devices

CNC machining is critical in the medical field, where precision and reliability are paramount. The production of surgical instruments, orthopedic implants, and medical device components requires meticulous attention to detail and strict adherence to regulatory standards. Materials such as stainless steel, titanium, and medical-grade plastics are commonly used in CNC machining to create parts that meet the rigorous demands of the healthcare sector. The capability to produce complex geometries and fine features makes CNC machining ideal for custom medical solutions.

Electronics Industry

In the electronics industry, CNC machining is essential for manufacturing enclosures, heat sinks, and various intricate components. The demand for miniaturization and precision in electronic devices necessitates the use of CNC machines, which can handle the fine tolerances and delicate features required. Materials like aluminum, copper, and specialized plastics are often used to create parts that provide both functionality and protection for electronic circuits.

Defense and Military

The defense and military sectors utilize CNC machining to produce a wide range of critical components, from firearm parts to vehicle components and specialized equipment. The ability to work with high-strength materials and achieve precise tolerances ensures that parts meet the rigorous demands of military applications. CNC machining provides the reliability and consistency necessary for the production of equipment that must perform flawlessly in extreme conditions.

Industrial Equipment

CNC machining is also widely used in the production of industrial equipment and machinery. Parts for pumps, valves, compressors, and other mechanical systems are often machined to exact specifications to ensure efficient and reliable operation. The versatility of CNC machining allows manufacturers to produce both small batches and large production runs with consistent quality.

Renewable Energy

The renewable energy sector benefits from CNC machining in the production of components for wind turbines, solar panels, and hydroelectric systems. High-precision parts such as turbine blades, mounting brackets, and electrical connectors are essential for the efficient generation and transmission of renewable energy. CNC machining provides the capability to produce durable, high-performance components that meet the unique requirements of renewable energy applications.