Precision CNC Milling Service

3-axis, 4-axis and 5-axis CNC milling for complex precision components — from single prototypes to stable monthly production for OEM programs.

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What Is CNC Milling?

CNC milling is a subtractive machining process where rotating cutting tools remove material from a fixed workpiece to create precise features — pockets, slots, threads, sculptured surfaces and tight-tolerance bores. It is the backbone process for most custom metal and plastic parts.

Our milling capacity covers the full spectrum: 3-axis for cost-effective prismatic parts, 4-axis for multi-face features in one setup, and full 5-axis simultaneous machining for complex geometries that would otherwise require multiple fixtures and longer lead times. Milled aluminium is also the standard route for custom electronics enclosures; our enclosure machining guide covers the wall-thickness, EMI-gasket and thread details that keep a box from becoming a scrap bin.

Milling Capabilities at a Glance

Capability	Specification	Notes
Machine configurations	3-axis / 4-axis / 5-axis	Simultaneous 5-axis available
Standard tolerance	±0.05mm	Per ISO 2768-m
Precision tolerance	±0.01mm	Feature-dependent, stated in quote
Max part size	1,000 × 600 × 550 mm	Larger on request
Surface roughness	Ra 0.8 μm standard	Ra 0.4 μm with fine finishing
Prototype lead time	5–7 working days	Express 3-day option
Production lead time	2–4 weeks	Scheduled monthly supply available

Rows of CNC vertical machining centers along a green-marked production aisle — **Machining center bay** — rows of 3- and 4-axis VMCs in production.

Precision CNC milled stainless steel flange with multiple mounting holes — typical flat milling job with tight tolerance — **Stainless 304/316 flange** — precision milled bolt circle and register face. See stainless steel grades.

Custom aluminum CNC milled manifold block housings with drilled and tapped precision features — typical 6061 housing machining — **Aluminium 6061 manifold blocks** — drilled, tapped and milled housings. See the full aluminum CNC guide.

Stainless steel CNC precision turned and milled parts laid out on a bench — OEM components — **Stainless precision parts**
Turned and milled 304/316 components. See stainless grades.

Stainless steel CNC precision parts on a workbench — fittings, pins and machined components — **Stainless workbench set**
Fittings and pins ready for inspection.

Stainless steel CNC turned threaded fittings and adapters for fluid handling assemblies — **Threaded fittings & adapters**
Stainless and brass fittings, NPT/BSP threads.

Anodized aluminum CNC machined parts — blue and natural anodized housings and brackets — **Anodized aluminium parts**
Type II anodize, color and clear. See aluminum guide.

Anodized aluminum CNC machined flashlight handle body — knurled grip and threaded ends — **Anodized handle body**
Knurled grip and threaded ends in 6061.

Materials

Materials We Mill

Aluminum 6061 / 7075

Excellent machinability and strength-to-weight — the default choice for housings, brackets and structural parts.

Stainless 304 / 316 / 17-4PH

Corrosion resistance for medical, food and marine-grade components.

Carbon & Alloy Steels

1018, 1045, 4140 — shafts, gears and load-bearing machine parts.

Engineering Plastics

POM, PEEK, Nylon, PC, PTFE — insulating, lightweight, low-friction parts.

See all materials with finish options → · Aluminum CNC machining guide →

FAQ

CNC Milling Questions

What is the difference between 3-axis, 4-axis and 5-axis milling?

3-axis milling moves on X, Y and Z — best for prismatic parts. 4-axis adds rotation around one axis for multi-face machining. 5-axis machines complex geometries in a single setup, improving accuracy and reducing lead time for curved or angled features.

What tolerance can CNC milling achieve?

Standard milling tolerance is ±0.05mm. With 5-axis equipment and proper fixturing we hold ±0.01mm on critical features depending on geometry and material.

How much does CNC milling cost?

Cost depends on material, complexity, tolerance, quantity and finish. Upload your drawings for an itemized quote within 24 hours — machining time, material and finishing are shown separately.

Milling vs. turning — which do I need?

Turning is best for round/symmetric parts (shafts, bushings); milling suits prismatic parts with pockets and slots. Many parts combine both — our mill-turn centers handle them in one setup.

Have a milling project?

Send drawings — engineer-reviewed quote in 24 hours.

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Keep Reading

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