Seamlessly scale from prototype to production with quality CNC machining services
With in-house capabilities and a trusted global network, we provide expert CNC machining support at every stage.
ITAR Registered
ISO 9001:2015
Why Quickparts for CNC Machining?
-
Perfect Precision
Our 3- and 5-axis CNC machining capabilities support complex metal and plastic components with tolerances up to ±0.0002” for demanding, high-accuracy applications.
-
Instant Quoting
QuickQuote® delivers pricing, lead times, and manufacturability feedback in seconds to help keep projects moving from design through production.
-
Unconstrained quantities, size, and complexity
Whether you need a single prototype or a high-volume production run, we support complex geometries, custom machining requirements, and a wide range of part sizes.
-
Pre-production review
Our DFM review helps identify potential machining challenges before production begins, supporting production-ready results and accurate part specifications.
-
Years of experience
With more than 35 years of manufacturing experience, our CNC teams bring practical machining expertise to demanding prototyping and production applications.
-
Outstanding customer service
Our engineering teams support more than 4,000 customers with project guidance, process selection, and production coordination from prototype through manufacturing.
How Our CNC Machining Services Work
Upload your CAD file, review instant pricing and manufacturability feedback, and move from prototyping to production with CNC machining support from Quickparts.
Upload Your CAD File
Upload your 3D CAD files through QuickQuote® to start the CNC machining process for custom metal and plastic components.
Receive a Custom Quote
Get pricing, lead times, and manufacturability feedback in seconds to help evaluate your design before production begins.
Confirm Specifications
Review materials, tolerances, finishes, quantities, and delivery requirements with our engineering team before manufacturing starts.
Production Begins
Our CNC machining teams manufacture parts using advanced milling, turning, and EDM equipment across global production facilities.
Inspection and Delivery
Finished parts undergo quality inspection before shipment to help verify dimensional accuracy and manufacturing requirements.
Other Quickparts CNC Machining Solutions
CNC Machining Industries and Applications
Our CNC machining services include 3-axis, 4-axis, and 5-axis machining solutions for different part geometries, tolerances, and production requirements.
-
Aerospace: Precision-machined structural parts, engine components, and avionics housings that demand tight tolerances and high-performance materials.
-
Automotive: Powertrain and drivetrain components, custom tooling, performance parts, and EV battery/cooling hardware for production and prototyping.
-
Medical: Biocompatible implants, surgical instruments, diagnostic equipment parts, and rapid-iteration prototypes for regulated medical devices.
-
Robotics & Automation: High-accuracy brackets, gears, end-effectors, and mechanical assemblies used in robotic systems and automated production lines.
-
Electronics: Machined heat sinks, enclosures, precision mounts, and prototype components for consumer electronics and industrial electronics.
-
Industrial Equipment: Durable parts for pumps, compressors, tooling, and replacement components for heavy machinery and manufacturing systems.
-
Defense: Ruggedized housings, mounts, optical system components, and mission-critical hardware for demanding military applications.
-
Energy: High-strength fittings, turbine components, battery and thermal hardware, and precision-machined parts for renewable and traditional power sectors.
How Quickparts delivers CNC machining results
See how manufacturers use Quickparts CNC machining services for custom metal and plastic components across aerospace, medical, automotive, electronics, and industrial applications. Explore examples of precision-machined parts produced for prototyping, functional testing, and production manufacturing.
CNC machining materials
Metals
We offer a broad range of CNC-machined materials for metal and plastic parts, with many more available upon request. Below is a selection of common options for prototyping and production.
- Stainless Steel
- Aluminum
- Brass
- Copper
- Tool Steel
- Magnesium
- Ren
- Titanium
Plastics
- ABS
- POM (Acetal)
- Polycarbonate
- PMMA (Acrylic)
- PA (Nylon)
- Foam
- Delrin
- PEI
- PEEK
If you need a material not listed here, our team can help evaluate your application and recommend the right option for your mechanical, cosmetic, thermal, or regulatory requirements.
Finishes
We offer many finish options to meet functional, cosmetic, or performance requirements for CNC-machined parts. Common finishes include:
- Standard: 63–125 RMS surface finish for most functional components
- Polished: Smooth, reflective surface for metal parts
- Heat-treated: Alters material properties like hardness or strength
- Anodized: Improves corrosion resistance and adds color (available for aluminum)
- Plated finishes: Nickel, tin, gold, and silver plating for improved conductivity
- Black oxide and chemical conversion: Provide corrosion resistance and aesthetic options
Custom finishing options are also available based on your project requirements.
What is CNC machining?
CNC machining services use computer numerical control machining to produce custom metal and plastic parts from solid blocks of material. Using programmed software and precision cutting tools, CNC machines remove material to create complex geometries, achieve tight tolerances, and produce repeatable, production-quality components.
Manufacturers use CNC machining for rapid prototyping, functional testing, and full production across aerospace, automotive, medical, electronics, and industrial applications. CNC milling, CNC turning, and EDM support a wide range of part sizes, materials, and manufacturing requirements.
CNC Machine Types
Our CNC machining services include 3-axis, 4-axis, and 5-axis machining solutions for different part geometries, tolerances, and production requirements.
-
3-axis machining Moves across the X, Y, and Z axes to machine flat surfaces and simpler geometries with reliable precision and efficient production.
-
4-axis machining Adds rotational movement to machine cylindrical and multi-sided parts in fewer setups for improved speed and consistency.
-
5-axis machining Tilts and rotates both the cutting tool and workpiece to produce complex geometries and detailed angles with high precision in a single setup.
CNC Machining Tolerances
We support tight tolerances down to ±0.002” using precision 3- and 5-axis CNC equipment. Our CNC capabilities also include:
- Applications: Validation builds, pre-production runs, functional testing, and form-fit-function prototypes
- Lathe capacity: Up to 203.2 mm (8″) in diameter and 609.6 mm (24″) in length
- Milling capacity: Travel limits of 1016 mm (40″) X, 533.4 mm (21″) Y, and 457.2 mm (18″) Z
- Minimum feature size: Typically greater than 0.25 mm (0.0098″), depending on geometry and material
- Lead times: Projects typically ship in 3–15 business days, depending on complexity and finishing needs
If you have specific CNC machining tolerance or dimensional needs, upload your CAD file to QuickQuote® to get instant feedback on what’s possible and how fast we can deliver.
CNC Machining FAQs
What are CNC machining services used for?
CNC machining services manufacture custom parts such as housings, brackets, shafts, fittings, heat sinks, tooling, and mechanical assemblies. Companies use CNC machining to produce durable, high-precision components for product development, replacement parts, and production manufacturing.
How much do CNC machining services cost?
CNC machining costs depend on factors including material selection, part geometry, tolerances, surface finishes, production volume, and machining complexity. Lead times, inspection requirements, and secondary operations can also affect overall project pricing.
Upload your CAD files to receive a fast, accurate quote through QuickQuote®
What is the process of CNC machining?
At Quickparts, the CNC machining process begins with a CAD file that defines the part geometry and dimensions. That file is converted into machine instructions that guide the CNC equipment during production.
A machinist secures the raw material inside the CNC machine before cutting tools remove material according to the programmed design. Once machining is complete, optional finishing processes such as polishing, coating, or surface treatments may be applied. The final part is then inspected to verify dimensional accuracy and manufacturing specifications.
How does CNC machining differ from traditional machining?
Traditional machining relies on manual operation, where machinists control cutting tools and machine movements throughout the process. CNC machining automates those movements using programmed software and digital instructions from a CAD file.
CNC machining is computer-controlled and precise; it can produce more consistent parts, support complex geometries, and maintain tighter tolerances at higher production volumes. At Quickparts, we use CNC machining to support rapid prototyping, production manufacturing, and high-precision custom part applications.
What is the maximum part size for CNC machining?
There isn’t one universal maximum size for CNC-machined parts. It depends on the type of machine, the number of axes, and the vendor’s equipment. Some specialty shops are equipped to handle parts several feet long or wide, while others are optimized for small, highly detailed components.
At Quickparts, our instant quoting platform supports CNC parts up to:
Milling: Up to 118” × 64” × 36”
Turning: Up to 13.75” diameter × 32.5” length
If your part exceeds those dimensions, that’s okay! We work with a broad network of global partners, including facilities equipped for large-format CNC machining. Just reach out with your specs, and we’ll help evaluate your design and match it with the right solution.
What are your tolerances for CNC-machined parts?
We offer 3-axis and 5-axis CNC machining with tolerances as tight as ±0.002 inches, depending on the material, geometry, and surface finish requirements of your part. Before production, our engineering team reviews your design to confirm which tolerances are achievable and whether any areas need adjustments.
Do you offer rapid or quick-turn CNC machining?
Yes! Quickparts specializes in quick-turn CNC machining for both prototypes and low-volume production runs.
We deliver fast turnaround times thanks to our own manufacturing capabilities with a global network of vetted CNC partners. We can match your project with the best-fit facility based on speed, material, complexity, and finish.
Many parts can ship in as little as 3–15 business days, depending on the design requirements. If you’re on a tight timeline, our team can help assess lead times and coordinate delivery options to keep your project moving.