Online Custom CNC Milling Services
JADE-CNC provides precision CNC milling machining for custom metal and plastic parts. From 3-axis plates to 5-axis complex geometry, we deliver tight-tolerance milled components with 30+ surface finishes — all under one ISO 9001 certified roof.
- No minimum order quantity
- Tight Tolerances: ±0.005mm
- Best delivery day within 3 day
- 30+ Surface Finishes Options
Custom CNC Milling Services in China
What is CNC Milling?
CNC milling removes material from a solid blank using rotating cutting tools to create flat surfaces, pockets, slots, holes, threads, contours, and complex 3D shapes. Unlike turning, which rotates the workpiece, milling holds the part stationary while the cutter moves along multiple axes.
JADE-CNC supports 3-axis, 4-axis, and 5-axis CNC milling for prototypes, low-volume production, and mass production. Whether you need a simple bracket or a complex aerospace component, our engineering team reviews tool access, wall stability, and tolerance feasibility before quoting.
Precision CNC Milling Services
As a CNC machining manufacturer in China, JADE-CNC provides custom CNC milled parts by your drawings, materials, tolerances, and surface finish requirements. Our prodution team supports prototype validation, small-batch and mass production, with repeatable quality for engineering products.
- Plates, housings, brackets & chassis
- Pockets, slots & threaded holes
- Complex 3D contours & sculpted surfaces
- Fixtures, jigs & tooling
- Heat sinks & enclosures
CNC Milling Capabilities in JADE-CNC
As a CNC milling factory, JADE-CNC supports 3 axis CNC milling, 4 axis CNC milling, and 5 axis milling work for mini or large cnc components, complex milling parts, precision milled parts, aluminum milling parts, and other custom machined parts. For tight tolerance milling, our engineers review datum references, feature depth, tool access, material behavior, surface finish, and inspection requirements before confirming the machining route.
3-Axis CNC Milling
3-axis vertical milling for plates, housings, brackets, pockets, slots, flat surfaces, drilled holes, and threaded features. The most common and cost-effective milling method for prismatic parts with features accessible from one or two sides.
Plates, housings, brackets, chassis, enclosures, panels, fixtures
4-Axis CNC Milling
4-axis milling adds a rotary axis for parts that need multi-side access, indexed features, cylindrical surfaces, or reduced repositioning. Ideal for parts with features on multiple faces or rotational patterns.
Shaft collars, cylindrical housings, valve bodies, manifolds, cam profiles
5-Axis CNC Milling
Simultaneous 5-axis machining for complex geometry, angled surfaces, undercuts, and parts requiring fewer setups. JADE-CNC offers dedicated 5-axis CNC machining capabilities.
Turbine blades, impellers, medical implants, complex molds, aerospace structures
What JADE-CNC Reviews for CNC Milled Parts
CNC milling projects often depend on feature access, tool reach, wall stability, tolerance risk, and surface finish planning. JADE-CNC reviews these details before machining so the process route matches the part geometry.
Pockets, Slots & Internal Corners
JADE-CNC reviews whether the cutter can reach internal features and whether corner radii match practical tool selection.
Holes, Threads & Bores
Threaded holes, precision bores, and hole patterns are checked for depth, access, tolerance, and inspection method.
Thin Walls & Small Features
Thin walls and small details are reviewed for machining stability, deformation risk, fixture support, and burr control.
Multi-Side and 5-Axis Features
Complex multi-side features are checked to decide whether 3-axis, 4-axis, or 5-axis machining is the better route.
Tolerance and Inspection Points
Critical dimensions and GD&T callouts are separated from general features so inspection can focus on functional risk.
Finish, Burrs and Visible Faces
Surface roughness, tool marks, deburring, and cosmetic surfaces are reviewed before finishing and final inspection.
Send drawings with available material, tolerance, feature notes, surface finish, inspection, quantity, and delivery requirements. JADE-CNC will review the CNC milling route before quotation.
Request CNC Milling QuoteThe Advantages Of CNC Milling
CNC milling is useful when a part requires accurate flat surfaces, pockets, slots, holes, threads, contours, and repeatable dimensional control. It also supports flexible prototype and low-volume production without dedicated molds.
Accurate Features
CNC milling produces repeatable flat surfaces, pockets, holes, and threads with tight tolerances. Ideal for mating faces and precision interfaces.
Flexible Production
From one prototype to thousands of parts — the same program and fixturing scale with your volume. Design changes are fast and low-cost.
Material Options
Mills aluminum, stainless steel, copper alloys, titanium, engineering plastics, and special alloys. Material choice reviewed for machinability and finish compatibility.
Finish Compatibility
Milled parts accept anodizing, polishing, passivation, plating, powder coating, and most other surface finishes. Finish requirements planned into machining.
Ease of Automation
CNC milling is highly automatable with tool changers, pallet systems, and probing — reducing labor cost and improving consistency for production runs.
CNC Milling Tolerances
JADE-CNC routinely holds tight tolerances for critical milling applications. Actual achievable tolerance depends on material, feature size, geometry, and inspection method.
Feature Type | Standard Tolerance | Critical Tolerance | Notes |
General linear dimensions | ±0.05mm | ±0.01mm | Depends on size & material |
Critical bore / hole | ±0.01mm | ±0.005mm | Reaming + inspection |
Position / location | ±0.02mm | ±0.01mm | CMM verified |
Flatness (sealing face) | 0.01mm/100mm | 0.005mm/100mm | Surface grinding |
Surface finish (as milled) | Ra 1.6μm | Ra 0.8μm | Standard |
Surface finish (polished) | Ra 0.4μm | Ra 0.05μm | Manual/mechanical polish |
Thread pitch | 6H/6g standard | 4H/4g precision | Gauge verified |
- Coordinate Measuring Machine (CMM) — 3D dimensional inspection
- Vision measuring system — 2D optical measurement
- Height gauge & micrometers — precision length measurement
- Surface roughness tester — Ra/Rz verification
- Pin gauges & thread gauges — hole & thread verification
- Hardness tester — Rockwell/Brinell/Vickers
CNC Milling Materials
JADE-CNC stocks and sources 50+ engineering materials for CNC milling. Material choice depends on strength, corrosion resistance, weight, conductivity, and finish requirements.
Material | Key Properties | Typical Applications |
Good machinability, moderate strength, anodizes well | Housings, brackets, panels, prototypes | |
Aluminum 7075-T6 | High strength, fatigue resistant | Structural parts, aerospace components |
Corrosion resistant, good strength | Food/medical parts, fixtures, valves | |
Stainless Steel 316L | Superior corrosion resistance | Marine, chemical, medical implants |
Stainless Steel 17-4 PH | High strength, heat treatable | Shafts, gears, aerospace fittings |
Brass C36000 | Excellent machinability, corrosion resistant | Connectors, valves, electrical parts |
Copper C11000 | High conductivity, corrosion resistant | Electrical contacts, heat exchangers |
Titanium Grade 5 | High strength-to-weight, corrosion resistant | Aerospace, medical, racing parts |
Tool Steel (D2/SKD11) | High hardness, wear resistant | Dies, punches, cutting tools |
Kovar (4J29) | CTE matches glass, hermetic sealing | Glass-to-metal seals, optoelectronic packages |
Material | Key Properties | Typical Applications |
ABS | Good impact strength, easy to machine | Housings, prototypes, consumer parts |
PC (Polycarbonate) | High clarity, impact resistant | Transparent parts, guards, lenses |
Acrylic (PMMA) | Excellent clarity, polished finish | Optical parts, display panels |
POM (Delrin) | Low friction, dimensional stable | Gears, bushings, sliding parts |
PA66 (Nylon) | Wear resistant, good mechanical | Gears, rollers, structural parts |
PEEK | High temp, chemical resistant | Aerospace, medical, semiconductor |
PTFE (Teflon) | Low friction, chemical inert | Seals, insulators, food-grade parts |
Special materials
Material | Key Properties | Typical Applications |
Invar 36 | Near-zero thermal expansion | Precision instruments, aerospace tooling |
Inconel 718 | High temp strength, corrosion resistant | Turbine parts, aerospace, energy |
Hastelloy | Superior corrosion/acid resistance | Chemical processing, oil & gas |
Surface Finishes for CNC Milled Parts
JADE-CNC offers 30+ surface finishes in-house and through certified partners. Finish requirements are planned into the milling process to ensure correct tolerances and adhesion.
Anodizing
Electrochemical coating that increases corrosion resistance, wear resistance, and decorative color options. Available in Type I (chromic), Type II (sulfuric), and Type III (hard coat).
Black Oxide
Chemical conversion coating that forms a black oxide layer on steel surfaces. Provides mild corrosion resistance and a black, non-reflective appearance.
Bead Blasting
Fine glass beads sprayed under pressure to produce a uniform matte, non-reflective surface. Hides tool marks and minor imperfections.
Chrome Plating
Chemical conversion coating for aluminum and zinc that provides corrosion protection and improves paint adhesion. Available in clear and yellow (iridescent) finishes.
Electroplating
Deposits a thin metal layer (nickel, chrome, zinc, gold, silver, tin) onto the part surface for corrosion protection, conductivity, or decorative appearance.
Heat Treating
Thermal process to alter material properties — increasing hardness, strength, or toughness. Includes annealing, quenching, tempering, and precipitation hardening.
Laser Engraving
Permanent marking using a focused laser beam. Ideal for part numbers, logos, serial numbers, and scale markings. No consumables, high precision.
Passivation
Chemical process that removes free iron from stainless steel surfaces, restoring the natural chromium oxide layer for maximum corrosion resistance.
Polishing
Mechanical process using progressively finer abrasives to achieve a smooth, reflective surface. Ra down to 0.05μm. Available for cosmetic and sealing-face applications.
Brushing
Mechanical surface treatment using abrasive belts or brushes to create directional linear grain patterns. Produces a consistent brushed finish that hides scratches and tool marks.
CNC Engraving
Permanent marking machined directly into the part surface using CNC tools. Ideal for part numbers, logos, serial numbers, and scale markings.
Nickel Plating
Electroplated nickel layer that provides corrosion resistance, hardness, and a smooth, semi-bright finish. Available as electroless nickel (uniform thickness, no current required) or electrolytic nickel.
Quality Certifications & Inspection
Quality is built into every step — from incoming material inspection to final shipment verification. JADE-CNC operates under internationally recognized quality standards.
Industries We Serve
JADE-CNC supplies precision CNC milled parts to four high-demand industries where tolerances, material certification, and surface finish directly affect performance.
Robotics
High-stiffness, low-weight structural and joint components in 7075-T6, stainless steel, and titanium. Critical bores held to ±0.01mm with CMM verification.
Typical parts: Joint housings, servo mounts, gear carriers, link arms, end-effector brackets
Communication
RF housings, waveguide components, and connector bodies in copper, brass, aluminum, and Kovar. Plating thickness verified with XRF gauges.
Typical parts: RF housings, waveguides, connector bodies, antenna mounts, heat sinks
Electronics
Enclosures, chassis, and thermal components in 6061-T6, copper, brass, and engineering plastics. Anodizing and chromating available.
Typical parts: Enclosures, chassis, connector pins, heat spreaders, EMI shields
Medical
ISO 13485 certified. Biocompatible parts in 316L, titanium Grade 5, PEEK, and medical aluminum. Full material certificates with every shipment.
Typical parts: Surgical instruments, implant components, device housings, lab equipment parts
Why Customers Choose JADE-CNC for CNC Milling
Clear Cost Drivers
Quotes break down material, machining time, finishing, inspection, and packaging separately. You see exactly what drives the price.
One-Stop Manufacturing Solution
Milling, turning, 5-axis, EDM, grinding, surface finishing, and inspection — all under one roof. No need to coordinate multiple vendors.
Global Delivery & Support
We ship worldwide via DHL, FedEx, UPS, and sea freight. English-speaking engineering team responds within 24 hours.
Experienced Engineering Review
Every project gets a real engineering review before quoting — not an automated instant quote. We flag manufacturability issues and suggest cost-saving alternatives.
Inspection Before Shipment
Every order goes through in-process and final inspection. Critical dimensions are 100% checked. Inspection reports are available with every shipment.
How to Start a CNC Milling Project
Upload STEP, IGES, X_T, or 2D PDF drawings through our quote form. Include material, quantity, tolerance, finish, and delivery requirements.
Send CAD files
Upload STEP, IGES, X_T, or 2D PDF drawings through our quote form. Include material, quantity, tolerance, finish, and delivery requirements.
Milling Review
Our engineers review tool access, feature depth, wall thickness, tolerance risk, and inspection needs. We may suggest design changes for cost or quality.
Quote Confirmation
Receive a detailed quote within 24 hours with material, process, finishing, inspection, and delivery breakdown. Confirm the order to start production.
Machining and Delivery
Parts are milled, finished, inspected, packed, and shipped according to confirmed requirements. Track your order at every stage.
Typical CNC Milled Parts
JADE-CNC manufactures a wide range of CNC milled parts across industries. Here are common part types we produce daily.
Part Type | Common Materials | Key Features |
Housings & Enclosures | Aluminum 6061-T6, ABS, PC | Pockets, threaded holes, sealing faces, EMI gaskets |
Brackets & Mounts | Aluminum 7075-T6, Stainless 304 | Mounting holes, precision bores, load-bearing features |
Plates & Panels | Aluminum 6061-T6, Stainless 316L | Flat surfaces, hole patterns, engraved markings |
Heat Sinks | Aluminum 6061-T6, Copper C11000 | Fin geometry, thermal interface flatness, mounting holes |
Fixtures & Jigs | Aluminum, Tool Steel, Acetal | Locator pins, clamp features, precision datums |
Gears & Pulleys | POM, PA66, Aluminum | Tooth profiles, bore tolerances, keyways |
Get Your Custom CNC Milling Quotation Today!
From concept to final production, JADE-CNC supports custom CNC milling projects with engineering review, precision machining, finishing, inspection, and delivery coordination.
Send your CAD files for a free DFM analysis and detailed quote within 24 hours. 50+ materials, 30+ finishes, no MOQ. ISO 9001 certified.
FAQ About CNC Milling Services
3-axis milling moves the cutter along X, Y, and Z axes for parts with features accessible from one or two sides. 4-axis adds a rotary axis for multi-side or cylindrical features. 5-axis moves the cutter and part simultaneously along five axes for complex geometry and undercuts. JADE-CNC helps you choose the most cost-effective axis count based on your part geometry.
Standard milling tolerances are ±0.05mm for general dimensions and ±0.01mm for critical features. With precision fixturing and CMM inspection, we can hold ±0.005mm on critical bores and 0.005mm/100mm flatness on sealing faces. Actual tolerance depends on material, feature size, and geometry.
JADE-CNC mills aluminum (6061-T6, 7075-T6, 5052), stainless steel (304, 316L, 17-4 PH), brass, copper, titanium, tool steel, Kovar, engineering plastics (ABS, PC, POM, PA66, PEEK, PTFE), and special alloys (Invar, Inconel, Hastelloy). Material choice depends on strength, corrosion resistance, weight, and finish requirements.
There is no minimum order quantity. We accept orders for single prototypes, small batches, and full production runs. The same engineering review and quality process apply regardless of quantity.
Send your CAD files and we will provide a detailed quote within 24 hours. For complex parts or assemblies requiring additional engineering review, we may need 48 hours. The quote includes material, machining time, finishing, inspection, and delivery breakdown.
Yes. We offer 30+ surface finishes including anodizing (Type I/II/III), bead blasting, chromating, electroplating (nickel, chrome, zinc, gold), heat treating, laser engraving, passivation, polishing, sandblasting, and tumbling. Finish requirements are planned into the milling process to ensure correct tolerances.
CNC milling uses rotating cylindrical cutters, so internal corners always have a radius equal to or larger than the cutter radius. Sharp internal corners require EDM (wire or sinker), broaching, or design changes. JADE-CNC reviews corner radii during DFM and suggests the most cost-effective solution.
Every order goes through incoming material inspection, first-article inspection (FAI), in-process checks, and final inspection. Critical dimensions are 100% verified; general dimensions are sampled. We use CMM, vision systems, micrometers, height gauges, surface roughness testers, and thread gauges. Inspection reports are available with every shipment.
Yes. Every project gets a free engineering review before quoting. We check tool access, wall thickness, corner radii, tolerance feasibility, and finish compatibility. We flag manufacturability issues and suggest cost-saving design changes before you commit.
Prototype lead times are typically 3-7 working days. Low-volume production (10-200 pcs) takes 7-15 working days. Mass production (200+ pcs) depends on complexity and material availability. Rush service is available for urgent projects — contact us for details.