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CNC Milling Service
Precision CNC Milling Service for Your Most Demanding Parts
From rapid prototypes to high-volume production. Enjoy industry-leading tolerances of ±0.01mm, 50+ materials, and delivery timelines as short as 3 days. Trusted by aerospace, medical, and automotive leaders worldwide.
CNC Milling Services
Full CNC Milling Service Solutions
From 3-axis milling for simple designs to 5-axis simultaneous milling for complex parts, we produce parts with good tolerance that meet your exact specifications.
3-Axis CNC Milling
This is a cost-effective process for machining parts with features accessible from only one direction. Common parts using this process include brackets, plates and housings.
- Best option for flat geometries
- Selects fastest turnaround time
- This option is reasonably cheap
5-Axis Milling
Multi-axis simultaneous 5-axis machining for advanced complex parts with multiple geometries found in aerospace and medical devices.
- Complex undercuts and contours
- One setup for accuracy
- Lead times shortened
Rapid Prototyping
Get functional prototypes in as little as 3 days. Assess designs quickly with production-grade materials and finishes.
- 3-day express available
- Free DFM feedback
- No minimum order
Production Machining
Move ahead from prototyping to full production with reliable and consistent quality. Scale advantages, as well as reserved capacity, are going hand in hand.
- 10-100,000+ parts
- Volume discount
- Kanban inventory option
Precision Machining
Ultra-precision tight tolerances for aerospace, defense, and medical devices in mission-critical applications down to ±0.005mm.
- Tolerances down ±0.005mm
- CMM inspection included
- Documentation incorporates full traceability
Surface Finishing
Professionally finish your parts with fine, clear coatings like anodizing, powder coating, plating, etc.
- Type II/III anodize
- Powder-coat
- Electroless nickel plate
Gallery of Custom CNC Milling Services Parts
View our gallery of high-quality, custom CNC milled parts. See examples of our precise and reliable CNC milling services for various industries.
CNC Milling Materials
50+ Materials for Each and Every Application
Select from our broad material library which consists of aluminum alloys, stainless steels, titanium, engineering plastics, and specialty metals. The engineers will guide you in choosing the best material suitable for your performance and budget.
Material Certifications
Mill test reports for all metals are available.
Material Consulting
Free professional help in selecting the right material for you.
Aluminum
Available Grades
6061
7075
2024
5052
Stainless Steel
Available Grades
303
304
316
17-4 PH
Titanium
Available Grades
Grade 2
Grade 5 (Ti-6Al-4V)
Copper & Brass
Available Grades
C110
C360
Beryllium Copper
Tool Steel
Available Grades
A2
D2
O1
S7
Plastics
Available Grades
ABS
PEEK
Delrin
Nylon
Engineering Reference Guide
CNC Material & Surface Finish Guide
Compare mechanical properties of CNC machining materials and understand surface roughness (Ra) specifications. Data sourced from ASM International, MatWeb, and ISO standards.
VS
Property Comparison
Property
Aluminum 6061-T6
UNS A96061
Aluminum 7075-T6
UNS A97075
Material Library
Surface Roughness Scale (Ra in µm) — ISO 1302
12.5
Rough
6.3
Medium
3.2
Standard
1.6
Smooth
0.8
Fine
0.4
Mirror
Standard Machined Finish
Ra 3.2 µm (125 µin)
ISO Grade
N8
RMS (Rq)
≈ 3.5 µm
Typical Process
End Milling, Face Milling
Cost Multiplier
1.0× (Standard)
Applications
Brackets, housings, general parts
Symbol
▽▽
Common CNC Surface Finishes
Ra Conversion Reference (ISO 1302)
| Ra (µm) | Ra (µin) | ISO Grade | RMS Rq (µm) | Symbol |
|---|---|---|---|---|
| 12.5 | 500 | N10 | 13.9 | ▽ |
| 6.3 | 250 | N9 | 7.0 | ▽ |
| 3.2 | 125 | N8 | 3.5 | ▽▽ |
| 1.6 | 63 | N7 | 1.8 | ▽▽▽ |
| 0.8 | 32 | N6 | 0.9 | ▽▽▽▽ |
| 0.4 | 16 | N5 | 0.4 | ▽▽▽▽ |
Industries We Serve
CNC Milling Expertise Across Industries
We have the knowledge of the different industries, from the aerospace industry compliance with AS9100D to the manufacturing of the medical devices that are under the FDA control.
AS9100D X:0.000 Y:0.000Aerospace
AS9100D certified. Components that are flight-critical for both commercial and defense applications.
ISO 13485 X:1.000 Y:0.000Medical Devices
ISO 13485 certified. Parts of surgical instruments, implants, and diagnostic equipment.
IATF 16949 X:2.000 Y:0.000Automotive
IATF 16949 certified skill. Parts and tools for EV, powertrain, and custom-made tools.
Precision X:3.000 Y:0.000Electronics
Manufacturing of precision enclosures, heat sinks, and semiconductor processing instruments.
ITAR X:0.000 Y:1.000Defense
ITAR certified. Components for weapon systems, communications equipment, and armor.
Custom X:1.000 Y:1.000Robotics
Prototyping of custom actuator housings, end effectors, and support structures.
Industrial X:2.000 Y:1.000Energy
Components for oil & gas, renewable energy, and power generation equipment.
Heavy Duty X:3.000 Y:1.000Industrial
Manufacturing equipment, tooling, fixtures, and automation components.
Technical Specifications
Our CNC Milling Capabilities
We employ cutting-edge technologies and stringent quality control measures throughout the process in order to ensure that we are able to produce parts that meet or exceed your highest demands.
Capability Matrix
LIVE SPECS
| Capability | Standard | Precision | Ultra-Precision |
|---|---|---|---|
| Linear Tolerance | ±0.127mm (±0.005″) | ±0.05mm (±0.002″) | ±0.01mm (±0.0004″) |
| Surface Finish (Ra) | 3.2 µm | 1.6 µm | 0.4 µm |
| Maximum Part Size | 2000 x 1000 x 800mm (78″ x 40″ x 32″) | ||
| Minimum Feature Size | 0.5mm (0.020″) | ||
| Minimum Wall Thickness | 0.5mm for metals, 1.0mm for plastics | ||
| Thread Sizes | M1.6 and larger, #0-80 and larger | ||
| Lead Time | 5-10 days | 7-14 days | 10-21 days |
How It Works
A Simple 4-Step Process
From the moment the quote is made until the delivery is done, we ensure that the precision CNC milling process is both easy and visible to the customer.
1
Upload Your Design
You can submit your CAD file (STEP, IGES, DXF) via our secure portal. Support for 2D drawings is included as well.
2
Get an Instant Quote
You will get the price in one day along with a free DFM analysis. Our engineers will take a look at complex parts within 24 hours.
3
Production Starts
As soon as the order is finalized, your parts are added to our production queue. You can monitor the progress in real-time on your dashboard.
4
Quality Control & Delivery
Each part gets a thorough inspection. You will get CMM reports, material certificates, and the costs of shipping to your location.
Free Engineering Tools
CNC Machining Calculator
Professional-grade calculators for CNC cost estimation and thread/tap drill sizing. Based on industry standards and real manufacturing data.
Part Specifications
mm
mm
mm
Cost Estimate
Estimated Total Cost
$285
Range: $242 – $342
$28.50 per part × 10 units
Cost Breakdown
- Material Cost $45.00
- Machining Time $150.00
- Setup Fee $50.00
- Surface Finishing $40.00
Disclaimer: This estimate is for reference only based on typical US machine shop rates ($50-150/hr). Actual costs vary by supplier, lead time, and specific requirements. Submit CAD files for accurate quotes.
Case Studies
Precision Results for Every Industry
The case studies below demonstrate how by using our 5-axis CNC milling capabilities, deep knowledge of materials, and quality as the top priority, produced good results for the customers who would otherwise be left with the manufacturing problems, high costs, and even longer time-to-market.
Aerospace & Defense
Aerospace Turbine Housing Component
Precision Titanium CNC Machining for Flight-Critical Applications
The Challenge
A top supplier to the aerospace industry came to us with a very difficult problem: The tolerances their vendor could meet consistently for a turbine housing component were not acceptable. The rejection rate at their previous supplier had reached 35%.
- Internal cooling channels with a width of no less than 3mm
- Complicated angles where simultaneous 5-axis interpolation was needed
- A roughness of Ra 0.8μm on the sealing surfaces
- Full material traceability and AS9100D documentation
Our Solution
1
Toolpath Strategy Optimized
Trochoidal milling patterns reduced cutting forces by 40% and increased tool lifetime from 45 minutes to over 3 hours.
2
Custom-Made Fixtures
Hydraulic workholding system with uniformly distributed clamping pressure without distortion.
3
In-Process Measurement
Renishaw probing for real-time dimensional verification after each critical operation.
4
Temperature Managed
High-pressure through-spindle coolant at 70 bar to control heat during deep pocket machining.
Results Achieved
First Article
100%pass rate
Rejection Rate
35%→0.5%reduced
Lead Time
40%reduction
Cost Per Part
22%reduction
“After a year-long battle with poor quality, a CNC machining partner who actually gets aerospace standards stepped up for us. The contractor had the 5-axis titanium machining capabilities and the AS9100D processes which made us sure that every part was going to be within the specs. We have broadened the partnership to encompass three more families of parts since then.”
Medical Devices
Medical Device Surgical Instrument Prototype
Rapid CNC Prototyping for FDA-Regulated Medical Devices
The Challenge
A medical device startup working on a novel minimally invasive surgical instrument faced a critical timeline: 12 weeks until the FDA submission deadline with multiple design revisions needed.
- Ergonomic handle geometry with undercuts needing special fixturing
- Joint mechanism with ±0.01mm very tight tolerances
- Biocompatibility electropolished surface finish requirement
- 5-day turnaround for each design revision
- FDA submission full material certification and batch traceability
Our Solution
1
DFM Review
Engineers provided DFM feedback within 24 hours, spotting issues before material was cut.
2
Dedicated Fixturing Library
Modular soft-jaw fixtures accommodating design changes without new fabrication.
3
In-House Surface Finishing
Electropolishing to Ra 0.4μm in-house, eliminating 2-week external lead times.
4
Documentation Package
Complete Device History Records (DHR) FDA-formatted for submission.
Results Achieved
Design Iterations
7in 10 weeks
Avg Turnaround
4 daysper revision
FDA Submission
2 weeksahead of deadline
Scale-Up
500 unitsseamless transition
“As a startup, we couldn’t afford delays or quality issues with our FDA submission. The rapid CNC prototyping service was a game-changer—their 4-day turnaround on precision stainless steel parts let us iterate quickly while their ISO 13485 documentation saved us months of paperwork. They’re now our sole manufacturing partner as we scale to production.”
Automotive / Electric Vehicles
Electric Vehicle Battery Housing
High-Volume Aluminum CNC Machining for EV Components
The Challenge
An upcoming EV company wanted to increase battery housing production from prototype amounts to 2,500 units monthly with aerospace-level accuracy and competitive pricing.
- Large size (650mm × 450mm) needed CNC machine with large envelope
- Intricate cooling channel layout for temperature control
- Flatness specification of 0.05mm on the sealing area
- Hard anodizing with stringent adhesion and thickness controls
- Target: 35% cost reduction compared to prototype costs
Our Solution
1
Process Optimization
Revolutionized cutting plan to reduce machine time from 4.5 hours to 2.8 hours.
2
Dedicated Production Cell
3 machines operating 24/7 with auto pallet changers for maximum spindle utilization.
3
In-House Anodizing
Type III hard anodizing facility eliminated 10-day external lead times.
4
Statistical Process Control
SPC monitoring on all vital dimensions with automatic tool offset compensation.
Results Achieved
Monthly Volume
2,500+units steady
Cost Reduction
42%vs prototype
On-Time Delivery
99.2%over 18 months
Quality Rate
99.7%first-pass yield
“Moving from prototype to mass production is where most hardware startups fail. Our CNC machining associate guided us through this critical transition with their aluminum machining knowledge and production engineering capabilities. The 42% cost decrease they accomplished made our business model feasible, and their regular quality has been pivotal for our vehicle reliability.”
Robotics & Automation
Robotics Actuator Housing
Complex 5-Axis CNC Milling for Precision Robotics
The Challenge
A top industrial robotics manufacturer was developing a new generation of co-robots with unprecedented movement capabilities. The actuator housing design included features impossible to machine with 3-axis.
- Six precision bearing bores at non-orthogonal angles
- Deep pocket machining at 15° angles for oil passages
- Mating features needing concentricity of 0.005mm
- Aluminum housing plus press-fit hardened steel inserts
- Low-volume (150 units/month) with high part variety
Our Solution
1
Single-Setup Machining
Tombstone fixture permitting all features in one setup, eliminating tolerance stacking.
2
Custom Tooling Development
Long-reach endmills and angle heads for deep internal features while keeping rigidity.
3
Coordinate System Optimization
Feature-based coordinate systems for accurate measurement at every crucial spot.
4
Sub-Assembly Integration
Press-fit of hardened steel bearing inserts using thermal interference fit method.
Results Achieved
Setup Reduction
6 → 1single setup
Cycle Time
65%reduction
Geometric Accuracy
100%within ±0.008mm
Robot Performance
30%better repeatability
“Conventional machining was having a hard time with the geometric complexity of our actuator housing. The partner who was doing our 5-axis CNC milling not only satisfied our stringent tolerance needs but in fact made our robot’s performance better by providing geometric consistency. The single-setup method they used reduced the cumulative errors we experienced with our prior multi-operation process.”
Consumer Electronics
Consumer Electronics Enclosure
High-Precision CNC Machining with Premium Surface Finishing
The Challenge
A high-end audio equipment maker was introducing a novel series with aluminum shells that would display and support the brand’s premium positioning through perfect acoustic performance.
- No tool marks visible on external surfaces
- Color matching of production batches to be perfect (ΔE < 1.0)
- Internal pocketing for electronics with EMI shielding
- 1.5mm thin wall sections without warping during anodizing
- Logo engraving with depth tolerance of ±0.02mm
Our Solution
1
Mirror Finish Machining
Diamond-polished PCD tooling achieving Ra 0.2μm surface finish directly from machining.
2
Stress-Relief Protocol
Thermal cycling between roughing and finishing to prevent thin-wall distortion.
3
Color Matching System
Spectrophotometer-verified color standards ensuring batch-to-batch consistency.
4
Dedicated Finishing Line
In-house bead blasting and anodizing with controlled environmental conditions.
Results Achieved
Cosmetic Accept
99.5%first-pass
Color Consistency
ΔE < 0.5batch-to-batch
Lead Time
3 weeksvs 6-8 industry avg
Customer Returns
< 0.1%quality issues
“Our brand reputation depends on flawless product quality. It was hard to find a CNC machining partner who was well-versed in both precision engineering AND cosmetic excellence—at least until we found this team. Their integrated surface finishing capabilities and color matching consistency have been remarkable. Our customers are always saying that the build quality of our enclosures is great.”
CNC Milling Parts FAQs
CNC machining services are the ones that involve milling, turning, drilling, and routing the creation of custom parts from metals and plastics utilizing a cnc machine. Once the machining process has started, it would usually go through the steps as follows: a CAD file is created; the material is chosen (aluminum, steel, polycarbonate, or plastic like ABS); the CNC shop setup is done; roughing and finishing passes are done to achieve the required tolerance; and finally, inspection is done before delivery. Many manufacturers offer these and other complementary manufacturing services, such as sheet metal fabrication, EDM, and 3D printing, enabling hybrid workflows between subtractive and additive methods.
Usually, all online cnc platforms will grant you access to instant pricing or an online quote just by uploading your CAD file (STEP, IGES, or STL) plus indicating the material, finishing, tolerance, and quantity. The costs will be determined by the system, taking into account the setups, machine times for milling or turning, and all slightly different operations. You will be able to find out the cost to deliver an estimate for prototypes, quick-turn parts, or production parts and also be able to ask for a price of custom cnc machining or precision cnc work.
Capabilities like 3-axis milling, milling, and turning with live tooling, maximum work envelope, tolerance ability, surface finish options, availability of cnc routing service, and supported cnc machining materials such as aluminum, stainless steel, and engineering plastics should be the focus when choosing a cnc manufacturing provider. Moreover, check if the shop deals with sheet metal, edm, or provides 3d printing and whether it can produce both simple and complex parts for prototyping and production parts.
First, tolerance specifies the allowable dimensional variation in machine parts. In cases where tolerances are very tight, that means precision cnc machining is required, and at the same time, it means the cost of that service might go up due to slow feeds, finer tooling, and extra inspection. Before submitting your CAD file, discuss your tolerances with the machine shop to ensure manufacturability and make the right trade-off between cost and function. Standard tolerances are applicable to many production parts, whereas for precision applications, careful control is essential.
Certainly, the majority of the online cnc machining service operators will allow you to upload CAD files to receive quotes and start manufacturing. You have the possibility to order just one prototype or even bigger batches of production parts from metals and plastics, with a variety of finishes, threads, and tight tolerances as well as other options. The platform usually has good support for rapid iterations for parts made for prototyping, which is why the parts can have quick-turn, and parts can be for prototyping with fast feedback on manufacturability and cost.
The range of materials in cnc machining is large, and it includes aluminum, steel, stainless steel, brass, polycarbonate, and various engineering plastics such as ABS and nylon. On the one hand, select metals for their strength, heat resistance, or wear properties; on the other, plastics for their lower weight, electrical insulation, or lower cost. Finally, consider the machining process, surface finish, and final application—cylindrical parts must be machined by cnc turning, while complex prismatic shapes need cnc milling, for instance.
CNC manufacturing mainly involves subtractive processes such as milling and turning to produce accurate cnc machined parts from solid stock. Sheet metal fabrication, on the other hand, involves bending, cutting, and assembling thin sheets of metal. A number of manufacturing services are combining both processes: a workshop may work on machined parts like brackets and housings, and at the same time carry out sheet metal fabrication for enclosures; thus, providing integrated assemblies and custom manufacturing solutions for products that need both machined components and sheet metal parts.
The price for CNC machining services depends on the type of material, the complexity, the quantity, the tolerances, the surface finish, and the needed machining methods (such as milling, turning, EDM, multi-axis). To decrease costs try to make the geometry easier, increase tolerances where possible, use standard materials, merge features to evade extra setups, and consider ordering more pieces for production parts to share out the setup cost. Make use of online instant quoters to compare prices from various cnc shops and to ask for quotations for improved designs.
Precision machining requires certified equipment, skilled operators, and quality control processes such as CMM inspection and the maintenance of documented tolerances. Make sure you check the cnc shop’s quality standards, inspection reports, and traceability of critical parts. Inquire about the timeframes for quick-turn parts as opposed to standard production, the available shipping options, and whether customers can receive complete services that range from design for manufacturability (DFM) feedback to getting a quote, uploading revisions, and managing the quote to delivery timeline for custom cnc parts.
