Online CNC Machining Service

Machined prototypes and production parts in as fast as 1 day. Request an online quote today.

Certifications ISO 9001:2015

CNC Machining Capabilities

CNC Milling

CNC milling is a precision subtractive manufacturing process that uses advanced 3-axis and 5-axis indexed machining to remove material from solid blocks of metal or engineering plastic, producing highly accurate custom parts with exceptional surface quality and tight tolerances.

CNC Turning

CNC turning with live tooling integrates CNC lathe and milling operations into a single machining process, allowing both rotational and milled features to be produced without secondary setups. This advanced manufacturing method is ideal for machining precision cylindrical components from metal or engineering plastic bar stock while improving accuracy, reducing cycle times, and minimizing production costs.

CNC Machining 服务 for End-Use Parts

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CNC Machining 材料

Aluminum

Aluminum is a preferred material for CNC machining thanks to its low density, excellent strength-to-weight ratio, superior machinability, and strong resistance to corrosion.

Common grades including 6061-T651, 7075-T651, and 2024-T351 offer an optimal combination of mechanical performance, precision machinability, and cost efficiency, making them ideal for both prototypes and end-use production parts.

Brass

Brass is an alloy primarily composed of copper and zinc, valued for its attractive gold-like appearance, excellent corrosion resistance, and outstanding machinability. It offers mechanical strength comparable to mild steel while maintaining superior resistance to weathering and environmental exposure.

Copper

Copper is a highly conductive and corrosion-resistant metal known for its excellent electrical and thermal conductivity, exceptional ductility, and ease of forming.

Its distinctive reddish-orange appearance makes it instantly recognizable, while its natural oxidation process gradually develops a protective bluish-green patina that enhances corrosion resistance and creates a unique aesthetic finish.

Due to its outstanding conductivity and durability, copper is widely used in electrical components, heat exchangers, bus bars, connectors, and industrial equipment.

While copper offers excellent machining characteristics for many applications, its weldability is generally considered moderate to poor and may require specialized welding processes and expertise.

Stainless Steel

Stainless steel is an excellent choice for a wide range of CNC machining applications thanks to its superior machinability, exceptional material consistency, and outstanding mechanical performance.

It offers excellent strength, corrosion resistance, and durability, while also providing good weldability and fabrication characteristics to accommodate diverse manufacturing requirements.

With its high ductility and formability, stainless steel can be machined into complex geometries while maintaining tight tolerances and structural integrity, making it ideal for both prototype and end-use production components.

Stainless steel is widely used in the aerospace, medical, automotive, food processing, and industrial equipment industries where performance and reliability are critical.

Steel Alloy

Steel Alloy 4140 is a versatile low-alloy steel containing chromium, molybdenum, and manganese, offering an excellent combination of strength, toughness, and wear resistance.

Widely used across industries such as aerospace, automotive, oil and gas, and industrial machinery, 4140 steel is a popular choice for CNC machining applications that require high mechanical performance and durability.

Its excellent toughness, high fatigue strength, and superior resistance to abrasion and impact make it ideal for demanding components such as shafts, gears, fasteners, tooling, and structural parts.

Steel Mild Low Carbon

Low carbon steel, commonly referred to as mild steel, contains up to 0.30% carbon, giving it excellent ductility, formability, and weldability.

Compared to high-carbon steels, mild steel offers lower strength and hardness but provides superior machinability and ease of fabrication, making it a cost-effective choice for a wide range of engineering and manufacturing applications.

Its combination of affordability, versatility, and good mechanical properties makes mild steel an ideal material for brackets, fixtures, structural components, and general-purpose machined parts.

Titanium

Titanium is a premium engineering material widely used in CNC machining due to its exceptional strength-to-weight ratio, outstanding corrosion resistance, and excellent biocompatibility.

These properties make titanium an ideal choice for demanding applications in the aerospace, medical, automotive, and energy industries, where high performance and reliability are critical.

Despite its advantages, titanium presents unique machining challenges. Its high strength, low thermal conductivity, and tendency to work harden during cutting require specialized tooling, optimized machining parameters, and advanced manufacturing expertise to achieve precision results.

Aluminum

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Brass

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Copper

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Stainless Steel

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Steel Alloy

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Steel Mild Low Carbon

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Titanium

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Plastics

ABS
Acetal
CPVC
Delrin
HDPE
Nylon
PEEK
PEI
PET
PMMA (Acrylic)
Polycarbonate
Polypropylene
PPSU
PSU

ABS

ABS is a cost-effective engineering thermoplastic with excellent machinability, impact resistance, and dimensional stability. Its combination of strength, stiffness, and ease of painting and bonding makes it an ideal material for functional prototypes, structural components, and low-volume production parts.

Acetal

Delrin® 570 is a 20% glass fiber-reinforced acetal homopolymer that provides exceptional stiffness, low warpage, and excellent creep resistance. Its superior dimensional stability and high-temperature performance make it an ideal material for precision CNC machined components in demanding industrial applications.

CPVC

CPVC (Chlorinated Polyvinyl Chloride) is a high-performance thermoplastic offering excellent corrosion resistance, chemical compatibility, and elevated temperature performance. Its superior durability and dimensional stability make it ideal for piping systems, fluid handling equipment, and self-supporting industrial structures operating in demanding environments.

Delrin

Delrin® (POM) is a high-performance engineering plastic known for its exceptional stiffness, low friction, excellent wear resistance, and dimensional stability. Its superior mechanical properties make it an ideal material for precision CNC machined components such as gears, bushings, bearings, rollers, and other high-performance industrial parts.

HDPE

HDPE (High-Density Polyethylene) is a lightweight engineering plastic with excellent chemical resistance, corrosion resistance, low moisture absorption, and outstanding impact strength. Its durability and machinability make it an ideal choice for water storage systems, fluid handling equipment, orthotic and prosthetic devices, and other industrial applications.

Nylon

Nylon (PA) is a high-performance engineering plastic known for its excellent strength, wear resistance, low friction, and dimensional stability. Its outstanding machinability and chemical resistance make it an ideal choice for CNC machined gears, bushings, bearings, rollers, and other precision components used in automotive, aerospace, medical, and industrial applications.

PEEK

PEEK (Polyether Ether Ketone) is a high-performance engineering plastic offering exceptional thermal stability, chemical resistance, mechanical strength, and wear resistance. Available in sheets, rods, tubes, and films, PEEK is an ideal material for precision CNC machined components used in aerospace, medical, semiconductor, and other high-performance industrial applications.

PEI

ULTEM® (PEI) is a high-performance amorphous engineering thermoplastic known for its exceptional mechanical strength, thermal stability, electrical insulation, and dimensional stability. Its natural amber appearance, high heat resistance, and excellent long-term performance make it an ideal material for precision CNC machined components used in aerospace, medical, electronics, and other high-performance industrial applications.

PET

PET (Polyethylene Terephthalate) is a high-performance semi-crystalline engineering plastic offering excellent wear resistance, low friction, high stiffness, and superior dimensional stability. Its outstanding machinability and mechanical properties make it an ideal material for precision CNC machined components used in mechanical, electrical, and industrial applications.

PMMA (Acrylic)

PMMA (Acrylic) is a transparent engineering plastic known for its exceptional optical clarity, high light transmission, excellent UV resistance, and outstanding surface finish. Its superior machinability and dimensional stability make it an ideal material for precision CNC machined components used in signage, displays, lighting, optical devices, and other applications requiring both clarity and aesthetics.

Polycarbonate

Polycarbonate (PC) is a durable engineering plastic with excellent dimensional stability, high impact strength, and superior optical clarity. Its combination of toughness, heat resistance, and machinability makes it an ideal material for precision CNC machined components used in medical, industrial, electronic, and optical applications.

Available Grades

Black
Clear
Translucent
20% Glass-Filled

Polypropylene

Polypropylene (PP) Copolymer is a lightweight, versatile engineering plastic with excellent chemical resistance, fatigue resistance, and low moisture absorption. Its outstanding durability, ease of fabrication, and availability in FDA-compliant grades make it an ideal material for CNC machined components used in chemical processing, food, medical, and industrial applications.

PPSU

Radel® R (PPSU) is a high-performance engineering thermoplastic known for its exceptional toughness, hydrolytic stability, high heat resistance, and excellent resistance to environmental stress cracking. Its inherent flame retardancy, outstanding electrical insulation, and long-term dimensional stability make it an ideal material for precision CNC machined components used in medical, aerospace, food processing, and industrial applications.

PSU

(PSU) is a high-performance engineering thermoplastic offering exceptional toughness, hydrolytic stability, and high-temperature performance. Its excellent resistance to environmental stress cracking, inherent flame retardancy, and superior electrical insulation make it an ideal material for precision CNC machined components used in medical, aerospace, food processing, and industrial applications.

PTFE

PTFE (Polytetrafluoroethylene), commonly known by the trade name Teflon®, is a high-performance fluoropolymer renowned for its exceptional non-stick properties, ultra-low coefficient of friction, and outstanding chemical resistance.

Its excellent wear resistance and self-lubricating characteristics make PTFE an ideal material for precision components such as bearings, bushings, seals, valve seats, gaskets, and sliding surfaces, where smooth operation and minimal friction are essential.

PTFE also provides outstanding resistance to aggressive chemicals, moisture, and corrosion, allowing it to perform reliably in some of the harshest industrial environments. With an exceptionally wide operating temperature range of -200°C to +260°C, it maintains excellent performance under both cryogenic and high-temperature conditions.

In addition, PTFE offers superior electrical insulation properties and excellent weather resistance, making it a preferred material for electrical insulation, semiconductor equipment, chemical processing, aerospace, food processing, and medical applications.

Available in sheet, rod, and tube forms, PTFE is an ideal choice for precision CNC machined components requiring low friction, high chemical resistance, and exceptional long-term durability.

ABS

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Acetal

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CPVC

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Delrin

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HDPE

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Nylon

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PEEK

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PEI

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PET

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PMMA (Acrylic)

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Polycarbonate

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Polypropylene

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PPSU

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PSU

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PTFE

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PVC

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Factory vs. Network

We offer flexible manufacturing solutions through both our in-house factories and our global manufacturing network.

Factory – Ideal for rapid prototyping and fast-turn production with industry-leading lead times.
Manufacturing Network – Best suited for advanced manufacturing capabilities, higher production volumes, and greater scheduling flexibility.

No matter your project requirements, we provide the right balance of speed, quality, cost, and manufacturing capacity.

CNC Milling
CNC Turning

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	Factory Capabilities for CNC Milling	Network Capabilities for CNC Milling
Maximum Part Size	22 in. x 14 in. x 3.75 in. (559mm x 356mm x 95.3mm)	25.5 in. x 25.5 in. x 11.8 in. (650mm x 650mm x 300mm)
Minimum Part Size	0.25 in. x 0.25 in x .0.04 in.(6.35mm x 6.35mm x 1.016mm)	0.0393 in. x 0.0393 in. x 0.0393 in.(1mm x 1mm x 1mm)
Tolerances for Parts without Technical Drawing	+/- 0.005 in. (+/- 0.127mm)	ISO 2768-1-1989-f (metals), ISO 2768-1-1989-m (plastics)
Tolerances for Parts with Technical Drawing	Linear tolerance quoted to ISO 2768-1-1989-f, Standard hole tolerance quoted to +/- 0.005 in. (+/- 0.127mm) Hole & bore-style tolerance on specified feature may be +/- 0.0005 in. (+/- 0.0127mm)	Please clearly indicate tolerances for nominal sizes below 0.5mm on your technical drawing.
Radii	Sharp inside corners on a part will be radiused (rounded) as a natural result of the CNC machining process.
Text	Plastic and soft metals: Minimum width of 0.018 in. (0.457mm), depth of 0.0118 in. (0.3mm). Example text size would be 16 point Arial Rounded MT font. Hard metals: Minimum width of 0.033 in. (0.838mm) and depth of 0.0118 in. (0.3mm). Example text size would be 22 point Arial Rounded MT font.

Note: Maximum part size varies by material.

		Factory Capabilities for CNC Turning	Network Capabilities for CNC Turning
Maximum Dimensions	Diameter	3.95 in. (100.33mm)	17 in. (431mm)
Maximum Dimensions	Length	9 in. (228.6mm)	39 in. (990mm)
Minimum Dimensions	Diameter	0.16 in. (4.07mm)	0.039 in. (1mm)
	Length	0.05 in. (1.27mm)	0.019 in. (0.5mm)
	Wall Thickness	0.020 in. (0.51mm)	0.019 in. (0.5mm)
	Angle	30°	Below 90°
Tolerances		+/- 0.005 in. (+/- 0.13mm)	±0.001 in. (0.020mm)

Note: Small features may be allowed, but the diameter in any region should not be less than 0.030 in. (0.76mm). Sharp conical points are allowed; angles should be greater than 30 degrees. Walls thinner than 0.020 in. (0.5mm) typically do not survive the machining process.

Surface Finish and Post-Processing Options

We offer a comprehensive selection of CNC machining surface finishes to meet your exact part requirements. Advanced coating, plating, and custom finishing options are available to improve performance, durability, and appearance.

Surface Finish Options

Edges broken with tool marks visible
Edges broken with light bead blasting
Sharp edges (tool marks visible)

Coating and Plating Options

Anodizing
Chromate coating
Powder coating
Zinc coating
Nickle plating

Why Choose Us for Custom CNC Machining?

Fast and Reliable Delivery

Rapidly iterate part designs and accelerate product development with quick-turn manufacturing, delivering precision parts on time and to specification—every time.

Infinite Capacity

Reduce downtime and alleviate pressure on your in-house machining by using our automated process, which provides on-demand, cost-effective manufacturing capacity.

Material Selection

We stock more than 30 engineering-grade plastic and metal materials to support a wide range of industries and applications. Our comprehensive material portfolio includes high-performance plastics such as ABS, Acetal (POM), Nylon, PEEK, Polycarbonate, PTFE, and Acrylic, as well as precision metals including Aluminum, Stainless Steel, Titanium, Brass, Copper, and Alloy Steel—providing the ideal material solution for both prototypes and end-use production parts.

What is CNC Machining and How Does it Work?

CNC machining is an automated manufacturing process that transforms a solid block or rod of material into a part using end mills. The end mills are controlled by software (G-code) which references a 3D CAD model to reduce the stock material into a desired geometry. Parts can be manufactured relatively quickly due to the level of automation.

There are many types of CNC machines, which include CNC milling and CNC turning. CNC machining is a suitable manufacturing process for one-off prototypes or custom components as well as mid-volume production quantities.

Advantages of CNC Machining

The subtractive process of CNC machining provides multiple benefits for both prototyping and production parts.

Precision & Repeatability
Tight Tolerances
Production-Grade 材料
Lead Times as Fast as 1 Day
Competitive Pricing for Production Quantities
Comprehensive Surface Finishing Options

CNC Machining Applications

CNC machining is widely used throughout the aerospace, medical, automotive industries for its ability to rapidly manufacture precise parts in production-grade materials. Typical CNC parts, include:

Housings & Enclosures
Brackets & Mounting Hardware
Manufacturing Fixtures & Tooling
Gears, Bearings & Bushings
Precision Mechanical Components
Medical Devices & Instrumentation

Tour Our Automated CNC Machine Shop

Take a quick tour through our 215,000 sq. ft. CNC machining facility in Minnesota to see how we leverage digitally-enabled processes to achieve industry-best lead times.

CNC Machining FAQs

How much does CNC machining cost?

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CNC machining is an economical solution for prototypes and low-volume production. Pricing is determined by material type, part complexity, quantity, surface finishing, and delivery requirements.

Upload your 3D CAD model to receive an instant quote with automated DFM analysis, allowing you to optimize your design while obtaining accurate pricing in minutes.

For rapid prototypes and low-volume orders, our in-house manufacturing facilities provide industry-leading lead times. For higher-volume production, our global manufacturing network offers more competitive pricing and expanded manufacturing capabilities.

What types of threading options are available?

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We offer a comprehensive range of threading options for precision CNC machined parts, including UNC, UNF, and metric threads to meet a wide variety of engineering and industrial requirements.

For applications requiring enhanced fastening performance, we also support coil inserts, key-locking inserts, Heli-Coil® inserts, and SM1, SM2, and SM3 lens threads. Parts can be machined to accommodate these threaded inserts, and hardware installation services are available upon request.

Whether you require standard internal and external threads or specialized threading solutions, our CNC machining services deliver accurate, reliable, and production-ready results.

View our complete threading guide to explore all available thread standards, insert options, and design recommendations.

What is the maximum part size for CNC machining?

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The maximum CNC machined part size varies depending on the selected material, part geometry, and machining process. Our standard machining capacity supports parts up to 22 × 14 × 3.75 in. (559 × 356 × 95.25 mm) in Aluminum 6061 and Aluminum 7075. For larger components or other materials, our engineering team can recommend the most suitable manufacturing solution based on your project requirements.