CNC milling is a subtractive manufacturing process that uses rotating cutting tools controlled by a computer to remove material from a solid block. It creates precise parts with complex shapes from metals and plastics.

How fast can you provide a CNC milling quote?

Send us your 3D CAD files (STEP, STP, IGES) and drawings. Most quotes come back within 6-12 hours on business days, never more than 24 hours. Every quote includes a free DFM review.

What materials do you mill?

We mill a wide range of metals including aluminum, stainless steel, steel, brass, copper, titanium, and nickel alloys. Plastics include ABS, POM (Delrin), PC, PMMA (acrylic), PA (nylon), PEEK, PTFE, and PP.

Do you keep my design files confidential?

Yes. All customer files, drawings, and project information are treated as strictly confidential. We are happy to sign NDAs (Non-Disclosure Agreements) before you share any sensitive designs.

Can you help with design for manufacturing (DFM)?

Yes. Every order receives a free DFM review from our engineers. We look for features that may cause issues during machining and suggest changes to cut cost, improve quality, or speed up delivery — before production starts.

What is your minimum order quantity (MOQ) for CNC milling?

There is no strict MOQ. We support everything from a single one-off prototype to small bridge runs of 50-500 pieces, up to full production volumes of 10,000+ parts per month.

What is the lead time for CNC milled parts?

Standard lead time is 3-8 business days for milled parts, depending on quantity, complexity, material, and finish requirements. Rush service with 1-3 day delivery is available for urgent projects.

Can you handle both low-volume prototypes and high-volume production?

Yes. Our factory is equipped to handle one-off prototypes, small batch runs, and full-scale production. The same quality standards apply whether you need 1 piece or 10,000 pieces.

What surface finishes are available for milled parts?

We offer a full range of finishes including as-machined, bead blasting, anodizing (Type II and Type III), powder coating, painting, electropolishing, passivation, black oxide, brushing, polishing, and various plating options.

CNC Milling Services | China Manufacturer & Supplier

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Slow Quotes That Kill Your Timeline

Waiting 3-5 days for a quote? Your project cannot afford that. We return most quotes in under 12 hours, and all within 24 hours — with free DFM feedback built in.

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Parts That Do Not Meet Spec

Out-of-tolerance dimensions, poor surface finish, wrong material. It costs time, money, and trust. Every part we ship goes through a documented QC inspection before it leaves our factory.

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Hidden Costs and Markups

Trading companies and brokers add layers of margin. We are the actual factory. You get transparent, itemized pricing with no middleman markup — often 20-40% lower than domestic quotes.

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Poor Communication

Emails that go unanswered, unclear status updates, language barriers. Our English-speaking engineering team responds within 4 business hours and keeps you informed at every step.

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Missed Deadlines

"Your parts will ship next week" becomes next month. We hit 98% of our quoted lead times, and we proactively notify you of any issue before it becomes your problem.

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IP and Design Risks

Worried about your designs being shared or copied? We take IP protection seriously. NDAs are standard, and we never use customer parts for marketing without permission.

CNC Milling machine precision manufacturing at YiguProto China factory — Our 5-axis CNC milling center machining a precision aluminum component

CNC milling is a subtractive manufacturing process. It starts with a solid block of metal or plastic. A rotating cutting tool then removes material to shape your part — all guided by computer code from your 3D CAD file.

Think of it as a very precise, automated sculpting machine. It can drill holes, cut pockets, carve complex curves, and create flat surfaces — all in one setup. This makes it ideal for parts that need tight tolerances and repeatable quality.

As a leading China CNC milling manufacturer and supplier, YiguProto delivers this precision directly from our Dongguan factory to customers worldwide. No brokers, no delays, no surprises.

Works with almost any metal or hard plastic
Holds tight tolerances for functional parts
Great for prototypes and production runs alike
No expensive tooling required — start quickly

Upload Your File for a Quote

❌ Common Supplier Problems

Quotes take 3-5+ days — delaying your project
Communication gaps and slow responses
Parts arrive out of tolerance with no inspection data
Hidden fees, shipping surprises, price hikes mid-order
Trading companies pretending to be factories
No DFM feedback — you only find issues after parts are made
IP shared with subcontractors without consent

✅ Working with YiguProto

Quotes within 6-24 hours, with clear pricing breakdown
English-speaking engineers respond within 4 hours
Every part inspected with CMM; reports available on request
Factory-direct pricing — all costs upfront, no surprises
We own and operate our own CNC milling factory in Dongguan
Free DFM review with every quote — catch issues early
NDA protection; your files stay in-house, never outsourced

3-Axis Milling

The workhorse of CNC machining. The cutting tool moves along X, Y, and Z axes — perfect for flat parts, simple geometries, holes, and pockets. Fast, cost-effective, and ideal for most prototype and production parts.

Best for: Brackets, plates, housings, jigs, fixtures, simple enclosures

Flat surfacesPocketsDrilled holes2D profiles

Complex Parts

4-Axis Milling

Adds a rotating axis (A-axis) so the workpiece can be turned while being cut. This lets us machine multiple sides of a part in one setup — reducing errors and lead time on parts that need features on several faces.

Best for: Gears, cams, shafts with side features, cylinders, extruded profiles

Multi-side featuresAngled holesCylindrical camsContoured surfaces

Highest Precision

5-Axis Milling

The cutting tool moves across five axes simultaneously. We can reach any angle on a part in a single setup — making truly complex shapes, undercuts, and deep cavities possible with the highest accuracy.

Best for: Aerospace parts, medical implants, turbine blades, complex molds, impellers

Complex 3D shapesUndercutsDeep cavitiesContoured surfaces

💡 Not sure which axis count you need?

You do not have to decide. Send us your CAD file and our engineers will recommend the most efficient machining approach. We will never push 5-axis pricing on a part that can be done perfectly on a 3-axis machine.

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Face Milling

Creates flat, smooth surfaces on the top face of your part with a fine finish.

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Drilling & Tapping

Precision holes and threaded holes in standard and custom sizes.

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Pocket Milling

Removes material to create recessed cavities, slots, and enclosed pockets.

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Contour Milling

Cuts curved or angled profiles along the outside of a part for complex shapes.

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Slot Milling

Cuts precise grooves, keyways, and channels at specified widths and depths.

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Chamfering

Adds angled edges to break sharp corners, improve safety, and prepare for assembly.

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Boring

Enlarges existing holes to very precise diameters with excellent surface finish.

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Thread Milling

Cuts internal and external threads with high accuracy, even in hard materials.

🔩 Metals

Strong, durable, and heat-resistant metals for structural and high-performance parts.

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Aluminum

6061, 7075, 5052

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Stainless Steel

304, 316, 17-4, 420

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Carbon Steel

1018, 1045, 4140, A36

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Brass

C36000, C26000

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Copper

C110, C101

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Titanium

Ti-6Al-4V (Grade 5)

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Nickel Alloys

Inconel, Monel, Hastelloy

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Bronze

Bearing bronze, phosphor bronze

🧊 Plastics

Engineering plastics for lightweight, corrosion-resistant, and insulating applications.

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ABS

General purpose, tough

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POM (Delrin)

Low friction, rigid

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PC (Polycarbonate)

Clear, impact resistant

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PMMA (Acrylic)

Optically clear, glossy

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PA (Nylon)

Wear resistant, tough

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PEEK

High temp, medical grade

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PTFE (Teflon)

Chemical resistant

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PP (Polypropylene)

Chemical resistant, flexible

Browse All Materials →

As Machined

Standard finish right off the mill. Visible tool marks, Ra 1.6-3.2 μm. Fastest and most economical.

Bead Blasting

Matte, uniform surface created by blasting with glass beads. Removes tool marks and hides minor defects.

Anodizing (Type II/III)

Hard, corrosion-resistant oxide layer on aluminum. Available in clear, black, red, blue, and other colors.

Powder Coating

Durable, decorative paint finish baked on as a dry powder. Wide color range, excellent chip resistance.

Brushing

Uniform directional grain lines for a decorative, professional look. Popular for consumer-facing parts.

Electroless Plating

Even nickel or other metal coating without electricity. Good corrosion resistance and uniform thickness.

Black Oxide

Dark conversion coating for steel and stainless steel. Minimal dimensional change, good for mating parts.

Polishing

High-gloss, smooth finish achieved through progressive abrasive steps. Can reach mirror finish on metals.

Passivation

Chemical treatment for stainless steel that removes free iron and improves corrosion resistance.

Painting

Custom color liquid paint with matte, satin, or gloss options. Includes primer for good adhesion.

View All Finishes →

Specification	Capability
Machine Types	3-axis, 4-axis, and 5-axis CNC machining centers
Standard Tolerance	±0.005 mm (±0.0002 in) on metals; ±0.01 mm on plastics (ISO 2768-m)
Precision Tolerance	Down to ±0.002 mm with GD&T callouts, subject to DFM review
Maximum Part Size (3-axis)	2000 × 1000 × 500 mm (79" × 39" × 20")
Maximum Part Size (5-axis)	500 × 500 × 400 mm (20" × 20" × 16")
Minimum Feature Size	0.5 mm (0.020 in), subject to geometry and material
Surface Roughness	Ra 0.8 μm (32 μin) standard; down to Ra 0.4 μm achievable
Thread Types	All standard UNC, UNF, metric, BSP, NPT threads; custom threads available
Wall Thickness (minimum)	0.5 mm for metals; 1.0 mm for plastics (recommended 1.0 mm+ for metals)
Available Materials	50+ metals and engineering plastics (see Materials section)
Quantities	1 piece to 10,000+ pieces per month; no MOQ
Standard Lead Time	3–8 business days; rush 1–3 day service available
File Formats	STEP, STP, IGES, SLDPRT, X_T, STL, PDF drawings
Quality Certification	ISO 9001:2015; CMM inspection reports available

Factor	CNC Milling	CNC Turning
How it works	Rotating tool cuts a stationary workpiece	Stationary tool cuts a rotating workpiece
Best for	Flat, blocky, or complex multi-face parts	Cylindrical or round parts
Typical parts	Brackets, housings, manifolds, molds, plates	Shafts, pins, bushings, rollers, fasteners
Geometry	Multi-face, complex 3D shapes possible	Round profiles, tapers, grooves, threads
Axis options	3, 4, and 5-axis	2-axis, with live tooling options
Complexity	High — undercuts, deep pockets, free-form surfaces	Medium — symmetric round features

💡 Have a part that needs both?

Many parts need milling AND turning — for example, a cylindrical shaft with a flat face or cross-hole. We offer turn-mill combination machining that handles both in one workflow. Just send your file and we will figure out the best process.

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Rapid Prototypes

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End-Use Production Parts

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Jigs & Fixtures

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Gears & Sprockets

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Housings & Enclosures

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Tooling & Mold Inserts

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Brackets & Mounts

🔌

Manifolds & Valve Bodies

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Medical Components

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Aerospace Parts

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Automotive Components

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Robotics Parts

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Aerospace & Defense

Precision components with full traceability and certification support.

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Automotive

Prototypes and production parts for performance and electric vehicles.

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Medical & Healthcare

Surgical instruments, device housings, and lab equipment components.

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Robotics & Automation

Custom brackets, arms, end-effectors, and structural parts.

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Electronics

Heat sinks, enclosures, connectors, and test fixtures.

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New Energy

Battery components, solar hardware, and EV charging parts.

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Industrial Equipment

Machine parts, hydraulic components, and heavy-duty hardware.

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Consumer Products

Sporting goods, appliances, and custom consumer hardware.

1

Upload Your Design

Send us your 3D CAD files (STEP, STP, IGES, SLDPRT) and 2D PDF drawings with tolerances noted.
Upload through our quote form or email us directly.

2

Get Quote + DFM in 24h

We review your design for manufacturability and send back an itemized quote with pricing, lead time, and any DFM suggestions.
All free, no obligation.

3

We Make Your Parts

Once you approve, our factory machines your parts to spec.
Every part goes through in-process QC and final CMM inspection.

4

Shipped to Your Door

Parts are carefully packed and shipped worldwide via DHL, FedEx, UPS, or freight.
You get tracking, inspection reports, and on-time delivery.

ISO 9001:2015

On-Time Delivery 98%

100% Inspection

Global Shipping

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Exceptional Precision
Tolerances down to ±0.002 mm

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Excellent Repeatability
Consistent parts, batch after batch

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No Tooling Needed
Start production in days, not weeks

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Material Versatility
Works with almost any metal or plastic

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Fast Turnaround
Parts in as little as 3 business days

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Scalable Volumes
1 to 10,000+ pieces seamlessly

1

Factory-Direct Pricing from China

You deal directly with the manufacturer — no middlemen, no hidden markup. Our Dongguan factory leverages China's mature supply chain to deliver genuine cost savings of 20-40% vs. domestic suppliers, without cutting corners on quality.

2

Fast Quotes in 24 Hours or Less

Time kills projects. Our engineering team reviews your files and returns a detailed, itemized quote within 24 hours (often within 12). Every quote includes free DFM feedback to help you avoid costly manufacturing issues.

3

Engineers Who Speak Your Language

No more lost-in-translation emails. Our engineering and sales teams are fluent in English and understand Western business expectations. We ask the right questions upfront to prevent mistakes on the shop floor.

4

Rigorous Quality Control

Every single part passes through a documented QC process — first article inspection, in-process checks, and final CMM verification. Material certificates and inspection reports are available with every shipment.

5

From Prototype to Production

Whether you need one prototype part today or 10,000 parts per month next quarter, we scale with you. No requalifying a new supplier — the same team, the same quality standards, from first article to full production.

6

Your IP Is Protected

We take design confidentiality seriously. All customer files are stored securely, NDAs are available on request, and we never outsource your parts to unknown subcontractors. Your design stays with us.

7

Complete Solutions Under One Roof

Need CNC milling plus turning, plus surface finish, plus assembly? We offer a full range of CNC machining, 3D printing, injection molding, sheet metal, and assembly services — making us your one-stop manufacturing partner.

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Proven Track Record

With over 15 years of precision machining experience and ISO 9001:2015 certification, we have delivered millions of parts to customers in North America, Europe, Australia, and across Asia. Our 98% on-time delivery rate speaks for itself.

What is CNC milling, and how does it work?

CNC milling is a computer-controlled machining process where a rotating cutting tool removes material from a solid block (called a "blank" or "workpiece") to create a finished part. The machine follows precise instructions from a CAM program generated from your 3D CAD file. It can move the cutting tool along multiple axes to create flat surfaces, holes, pockets, slots, threads, and complex 3D contours — all with very high precision.

How fast can I get a quote for CNC milling?

Most of our CNC milling quotes are returned within 6-12 business hours, and all quotes are guaranteed within 24 hours. To get the fastest and most accurate quote, send us your 3D CAD files (STEP/STP preferred) along with any 2D drawings that specify tolerances, material, finish, and quantity.

What tolerances can you hold on milled parts?

Our standard tolerance for CNC milled metal parts is ±0.005 mm (±0.0002 inch), following ISO 2768 medium standards. For plastic parts, standard tolerance is ±0.01 mm. We can hold tighter tolerances down to ±0.002 mm when specified on your drawing with GD&T callouts. If you have specific tolerance requirements, note them on your drawing and we will confirm feasibility during our DFM review.

What file formats do you accept for quoting?

We accept STEP (.stp, .step), IGES (.igs, .iges), SolidWorks native files (.sldprt, .sldasm), Parasolid (.x_t, .x_b), and STL files (for reference). For accurate tolerancing, please also provide 2D PDF drawings with critical dimensions, tolerance callouts, material specs, surface finish requirements, and any GD&T notes.

What materials can you mill?

We mill over 50 different materials. Common metals include aluminum (6061, 7075, 5052), stainless steel (304, 316, 17-4 PH), carbon steel (1018, 1045, 4140), brass, copper, titanium (Grade 5), and nickel alloys. Common plastics include ABS, POM (Delrin), PC (polycarbonate), PMMA (acrylic), PA (nylon), PEEK, PTFE, and polypropylene. If you need a specific material not listed, ask us — we can likely source it.

What is your minimum order quantity (MOQ)?

There is no strict MOQ for our CNC milling service. We regularly produce single one-off parts for prototyping, small bridge runs of 10-500 pieces, and full production volumes of 10,000+ parts per month. Whether you need one part or ten thousand, you will receive the same level of quality and attention.

What is the standard lead time for CNC milled parts?

Our standard lead time is 3-8 business days, depending on part complexity, material availability, quantity, and surface finish requirements. Rush service with delivery in 1-3 business days is available for urgent projects. Lead time starts after you approve the quote and make payment. We will always give you a specific delivery date with your quote.

Do you provide design for manufacturing (DFM) feedback?

Yes. Every quote includes a free DFM review by our experienced engineers. We check for features that could cause problems during milling — such as deep narrow pockets, overly thin walls, impossible internal corners, or tolerance stacks — and suggest practical changes to reduce cost, improve quality, or shorten lead time. This review happens before you commit to anything.

How do you ensure quality control?

Quality is built into every step. We perform first article inspection (FAI) on all new parts, in-process dimensional checks during production, and final inspection using calibrated measuring equipment including calipers, micrometers, height gauges, and CMM (coordinate measuring machine). Material certificates (mill test reports) are available, and we can provide full inspection reports with your shipment upon request. Our factory is ISO 9001:2015 certified.

Will my design files be kept confidential?

Absolutely. We treat all customer files, drawings, and project information as strictly confidential. All files are stored in our secure system with limited access. We are happy to sign a mutual NDA (Non-Disclosure Agreement) before you share any sensitive designs. We never use customer parts for marketing purposes without explicit permission.

What surface finishes are available?

We offer a comprehensive range of surface finishes including: as-machined (standard), bead blasting, anodizing (Type II and Type III hard coat in various colors), powder coating, wet painting, brushing, polishing, electropolishing, passivation (for stainless steel), black oxide, electroplating (nickel, chrome, zinc), alodine/chromate conversion, tumble finishing, and heat treatment. Let us know your requirements and we will recommend the right finish.

Do you offer free samples?

We can produce prototype samples for your evaluation and testing before you commit to a full production order. Sample costs depend on the material, complexity, and quantity — but this cost is typically credited back to you when you place a subsequent production order. Contact us to discuss your sample needs.

How do you handle shipping?

We ship worldwide using trusted carriers including DHL, FedEx, UPS, and TNT for small to medium orders (typically 3-5 days door-to-door). For larger orders we also offer air freight and sea freight options to help reduce shipping costs. All shipments include tracking numbers, and we carefully pack parts to prevent damage in transit. We can ship DDP (Delivered Duty Paid) to most countries.

CNC Milling Services from a Trusted China Manufacturer

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