3-Axis CNC Milling
Cost-effective milling for plates, housings, brackets, covers, fixtures, and flat or pocketed features.
Get QuoteCNC Milling Services in China for Custom Precision Parts
FSD Precision provides custom CNC milling services for metal and plastic OEM parts based on drawings, samples, or technical requirements. Our team reviews material, geometry, tolerances, surface finish, inspection scope, quantity, and application needs before quotation.
3-Axis / 4-Axis / 5-Axis MillingPrototype to ProductionEngineering Review Before QuotationCMM / FAI / Material Certificate Available
Quick RFQ Checklist
- 2D / 3D drawings
- Material and quantity
- Surface finish
- Tolerance requirements
- Target lead time
- Application / assembly needs
Custom CNC Milling for OEM Metal and Plastic Parts
FSD Precision provides CNC milling services for custom OEM parts based on drawings, samples, or technical requirements. We support aluminum, stainless steel, steel, brass, copper, and engineering plastic components, from prototype validation to low-volume and batch production. Before quotation, our engineering team reviews material selection, tolerance requirements, geometry, surface finish, inspection needs, and production route.
CNC Milling Capabilities
Choose the milling route according to part geometry, access direction, tolerance focus, surface finish, and production quantity.
From CNC Milling Prototypes to Batch Production
The quotation route changes depending on whether the project is a sample, pilot build, bridge order, or repeat production run.
Project stages we support
01
Prototype CNC Milling
Design validation, material review, functional samples, and early geometry checks.
02
Low-Volume CNC Milling
Pilot builds, replacement parts, bridge production, and project-specific industrial components.
03
Batch Production CNC Milling
Repeat orders with fixture planning, process control, inspection, finishing, packaging, and export delivery.
CNC Milling Materials
Slide through common CNC milling materials, then select one to review grades, applications, finish options and RFQ confirmation points.
Aluminum Alloy
Common CNC milled aluminum grades include 6061, 6063, 7075, 5052, 2024 and 6082. Aluminum is often selected for lightweight housings, brackets, panels, fixtures, heat sinks and prototype-to-production OEM parts.
Common grades: 6061, 6063, 7075, 5052, 2024, 6082Typical parts: housings, brackets, panels, fixtures, heat sinksFinish options: anodizing, bead blasting, painting, powder coatingRFQ review: tolerance, flatness, wall thickness and appearance surface
CNC Milling Tolerances & Machining Standards
Final tolerance, surface roughness and inspection scope are confirmed according to drawings, material, quantity and application requirements.
| Item | Reference / Option |
|---|---|
| General tolerance | According to drawing or ISO 2768 when applicable |
| Standard machining tolerance | ±0.05 mm to ±0.10 mm depending on material and geometry |
| High precision features | Down to ±0.01 mm when design, material and process allow |
| Surface roughness | Ra 3.2 / Ra 1.6 / Ra 0.8 depending on requirement |
| Threads | Metric, UNC, UNF available |
| Inspection | CMM, caliper, height gauge, thread gauge, surface roughness inspection available |
Surface Finishing Options
Finish selection depends on appearance, corrosion resistance, wear requirement, assembly interface and customer drawing notes.
As Machined
Visible machining marksFunctional and cost-sensitive option
Anodizing
Common for aluminum partsClear, black or custom color options
Bead Blasting / Sandblasting
Matte surface textureOften combined with anodizing
Polishing / Brushing
Appearance or smoothness improvementReviewed by drawing or sample
Powder Coating / Painting
Color and protective coating supportUseful for housings and panels
Plating / Heat Treatment
Project-specific functional finishingConfirmed by material and application
CNC Milled Parts Gallery
Representative part families for OEM equipment, industrial assemblies, thermal management, automation and custom manufacturing projects.
Aluminum housings and enclosures
CNC milled housings for electronics, control units and equipment assemblies.
Precision brackets
Lightweight support parts, mounting brackets and structural components.
Heat sink and thermal components
Thermal management parts for power electronics and energy systems.
Motor housings and connector components
Machined interfaces, connector bodies and fit-critical components.
Automation equipment parts
Custom machined parts for fixtures, modules and machinery.
Custom OEM machined parts
Drawing-based components for prototype, bridge and repeat production projects.
CNC Milling for Industrial Applications
FSD supports OEM buyers where machined parts need stable dimensions, functional surfaces and documented inspection.
Automotive & EV
Brackets, housings and fixture parts.
Robotics & Automation
Machine parts and motion modules.
Semiconductor Equipment
Precision plates and fixture components.
Medical Devices
Housings, supports and functional parts.
Industrial Equipment
Machinery and instrument components.
New Energy / Electronics & 3C
Thermal, enclosure and connector parts.
Inspection Support for CNC Milled Parts
Inspection planning is based on drawings, critical dimensions, material requirements, surface finish and application needs.
Drawing & Material Review
Drawing reviewMaterial confirmationCritical dimension planning
Dimensional Inspection
First Article InspectionIn-process inspectionFinal dimensional inspection
Reports on Request
CMM reportMaterial certificate / CoCSurface finish inspection
Engineering Review & CNC Milling RFQ Workflow
FSD uses an engineering review-based quotation process instead of automatic instant pricing.
01
Upload drawings or samples
Send 2D drawings, 3D files, photos, samples or part requirements.
02
Engineering review
Review geometry, tolerance, material, surface finish and application needs.
03
Material and tolerance evaluation
Confirm route, fixture approach, finishing and inspection scope.
04
Quotation and lead time confirmation
Confirm quote scope, quantity, production route and delivery plan.
05
Production and inspection
Coordinate machining, process checks and final inspection.
06
Finishing and export delivery
Support finishing, packaging and export-ready handoff.
CNC Milling Design Guidelines
Avoid unnecessary tight tolerancesAdd proper internal radiiAvoid very thin walls when possibleMark critical dimensions clearlySpecify surface finish requirementsProvide 2D drawings for GD&T and tolerance controlConfirm material and quantity
CNC Milling FAQ
What is CNC milling?
CNC milling is a subtractive machining process that uses rotating cutting tools to remove material from a workpiece and create custom parts based on CAD files or technical drawings.
What materials can be CNC milled?
Common CNC milling materials include aluminum, stainless steel, steel, brass, copper, and engineering plastics such as POM, ABS, Nylon, PC, PEEK and PTFE.
What tolerances can FSD achieve for CNC milling?
Standard machining tolerances are often in the ±0.05 mm to ±0.10 mm range depending on material and geometry. High precision features can be reviewed down to ±0.01 mm when design, material and process allow.
When should I choose 3-axis, 4-axis or 5-axis CNC milling?
3-axis milling is suitable for many plates, pockets and simple housings. 4-axis milling helps with side features and indexed machining. 5-axis milling is reviewed for complex shapes, difficult access and multi-angle features.
What is the difference between CNC milling and CNC turning?
CNC milling uses rotating cutting tools for prismatic, pocketed and multi-face parts. CNC turning rotates the workpiece and is better suited for shafts, bushings, threaded round parts and rotational components.
Can FSD provide surface finishing for CNC milled parts?
Yes. FSD can support as-machined finish, anodizing, bead blasting, polishing, brushing, powder coating, painting, plating, black oxide and heat treatment depending on material and requirements.
Can FSD support prototype and small-batch CNC milling?
Yes. FSD supports prototype, low-volume and batch CNC milling projects after engineering review of drawings, material, tolerance, finishing and inspection requirements.
What files should I send for CNC milling quotation?
Please send 2D drawings, 3D CAD files, material requirements, quantity, surface finish, tolerance notes, critical dimensions, and application information when available.
Ready to Start Your CNC Milling Project?
Upload your drawings, 3D files or part requirements. FSD Precision will review your material, tolerance, surface finish, quantity and inspection needs before quotation.