Custom CNC Machining Services for Prototypes and Production
Get custom CNC machined metal and plastic parts for functional prototypes, low-volume orders and repeat production.
Our manufacturing capabilities include 3-axis, 4-axis and 5-axis CNC milling, CNC turning, EDM and precision grinding, supported by DFM feedback, dimensional inspection and global delivery.
ISO
9001 Certified
±0.01 mm
Critical Features
From 5 Days
Prototype Lead Time
Fast Quote
Engineering Review
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CNC Machining Capabilities at a Glance
Evaluate our manufacturing capabilities before submitting your project. Final tolerances, lead time and machining strategy are confirmed after reviewing your CAD files, drawings, material and quantity requirements.
| Capability | Available Options |
|---|---|
| Machining Processes | 3-axis, 4-axis and 5-axis CNC milling, CNC turning, EDM, drilling and precision grinding |
| Materials | Aluminum, stainless steel, steel, titanium, brass, copper, specialty alloys and engineering plastics |
| General Tolerance | According to the drawing or applicable ISO 2768 requirements |
| Precision Features | Down to ±0.025 mm for suitable features |
| Critical Dimensions | Down to ±0.01 mm after engineering review |
| Order Quantity | One-off prototypes, low-volume batches and repeat production |
| Prototype Lead Time | From 5 business days for suitable projects |
| Inspection | In-process inspection, final dimensional inspection and CMM verification |
| File Formats | STEP, STP, IGES, IGS, X_T, SLDPRT, DWG, DXF and PDF |
Tolerance capability depends on part geometry, material, feature size, datum structure, heat treatment and inspection requirements. Please identify critical dimensions in your 2D drawing so our engineers can review them before quotation.
Our CNC Machining Capabilities
Our Custom CNC Machining Services
Choose the machining process that best matches your part geometry, functional requirements and production volume. Our engineering team can also recommend a suitable process after reviewing your design.
CNC Milling Services
CNC Turning Services
5-Axis CNC Machining
Additional processes include EDM, drilling, tapping, boring, reaming, precision grinding and secondary finishing where required.
Need Engineering Feedback Before Ordering?
Upload your CAD files and receive free DFM suggestions, material recommendations, and a quotation within 24 hours.
CNC Machining Equipment and Inspection Systems
Baosheng projects are supported by a manufacturing facility equipped for multi-axis machining, precision turning, EDM, grinding and dimensional inspection.
The equipment mix allows our team to select an efficient machining strategy based on part geometry, tolerance, material and order quantity.
5-Axis CNC Machining Centers
3-Axis and 4-Axis CNC Mills
CNC Lathes and Turn-Mill Equipment
EDM and Precision Grinding
CNC Machining Tolerances and Part Requirements
Clear tolerance requirements help control manufacturing cost and inspection risk. Wherever possible, apply tight tolerances only to features that directly affect fit, function or assembly.
| Feature | CNC Milling | CNC Turning |
|---|---|---|
| Maximum Part Size | Up to 4000 × 1500 × 600 mm* | Up to Ø200 × 500 mm |
| Minimum Part Size | Approximately 4 × 4 mm | Approximately 2 × 2 mm |
| Minimum Feature Size | Ø0.50 mm | Ø0.50 mm |
| Linear Dimensions | Down to ±0.025 mm for suitable features | Down to ±0.025 mm for suitable features |
| Critical Features | Down to ±0.01 mm after review | Down to ±0.01 mm after review |
| Hole Diameter | According to drawing and machining method | According to drawing and machining method |
| Threads | Standard and custom threads according to drawing | Standard and custom threads according to drawing |
| Edge Condition | Sharp edges broken unless otherwise specified | Sharp edges broken unless otherwise specified |
*Large-part capability depends on the required machining process, equipment allocation and project arrangement. Final feasibility must be confirmed after reviewing the part files.
Threads and Tapped Holes
Standard metric, UNC, UNF and other thread specifications can be produced according to the drawing. Thread depth and accessibility are reviewed based on diameter, tool reach and material.
Surface Roughness
As-machined surface finish depends on material, cutting parameters, tool condition and part geometry. Define any critical surface-roughness requirement clearly in the drawing.
Critical Dimensions
Identify critical dimensions, datum references and geometric tolerances in your 2D drawing. Our engineering and quality teams will confirm the machining and inspection approach before production.
Thin Walls and Deep Cavities
Thin walls, deep cavities and long-reach features may increase the risk of vibration, deformation and tool deflection. DFM recommendations may include increasing wall thickness, adding radii or adjusting feature depth.
Quality Control for CNC Machined Parts
Quality control begins with material and drawing review and continues through machining, finishing and final inspection.
Baosheng projects are produced through an ISO 9001:2015-certified manufacturing facility with documented inspection procedures for prototypes and production parts.
Inspection Documentation
Available documentation may include:
• Dimensional inspection reports
• First Article Inspection reports
• Material certificates
• Certificate of Conformance
• CMM reports
• Surface-treatment certificates
• Customer-specific inspection records
Material Verification
Material grades and customer specifications are checked before machining. Material certificates and traceability records are available when required by the project.
First Article Inspection
First Article Inspection can be arranged for production orders and critical components to verify key dimensions before the full batch proceeds.
In-Process Inspection
Operators and quality personnel check critical features during setup and production to identify dimensional deviation before it affects the full order.
Final Dimensional Inspection
Completed parts are inspected against approved drawings using appropriate measurement tools, gauges and coordinate measuring machines.
CNC Machining Materials and Surface Finishes
Select materials and finishes according to mechanical strength, weight, corrosion resistance, thermal performance, appearance and project budget.
Our engineers can review alternative materials when a design requires improved machinability, shorter lead time or lower manufacturing cost.
CNC Machining Plastics
ABS
POM / Delrin
Nylon
Polycarbonate
PEEK
PTFE
PMMA / Acrylic
PEI
PPS
HDPE
PVC
G-10 / FR4
CNC Machining Metals
| Material | Common Grades |
|---|---|
| Aluminum | 6061-T6, 7075-T6, 2024 |
| Stainless Steel | 303, 304, 316L, 17-4 PH |
| Steel | Mild steel, alloy steel and tool steel |
| Titanium | Grade 2, Ti-6Al-4V |
| Brass | C360, C260 |
| Copper | C110, C101 |
| Magnesium | AZ31 and project-specific grades |
| Inconel | 601, 625, 718 |
| Invar | Invar 36 and project-specific grades |
| Zinc | Project-specific zinc alloys |
Available Surface Finishes
| Finish | Typical Purpose |
|---|---|
| As Machined | Fast, economical functional finish |
| Anodizing | Corrosion resistance and color for aluminum |
| Hard Anodizing | Improved wear resistance |
| Bead Blasting | Uniform matte appearance |
| Sandblasting | Surface cleaning and texturing |
| Powder Coating | Durable colored coating |
| Painting | Custom color and appearance |
| Passivation | Improved corrosion resistance for stainless steel |
| Electropolishing | Cleaner, smoother stainless-steel surfaces |
| Nickel Plating | Wear and corrosion protection |
| Zinc Plating | Corrosion protection for steel |
| Polishing | Improved smoothness and appearance |
CNC Machining from Prototype to Production
Use the same manufacturing and quality team as your project progresses from design validation to repeat production.
Rapid CNC Prototypes
One-off and small-quantity parts for design validation, assembly testing, functional evaluation and investor or customer demonstrations.
• Quantity from 1 part
• Fast engineering review
• Material and finish options
• Dimensional inspection available
Low-Volume Manufacturing
Pilot runs and bridge-production orders for product testing, early market launch and demand validation.
• Controlled batch production
• Repeatable machining methods
• First Article Inspection available
• Flexible design revisions
Repeat Production
Ongoing production orders supported by retained process information, inspection requirements and established machining strategies.
• Repeat-order consistency
• Scheduled production
• Batch inspection
• Documented quality requirements
Selected CNC Machining Projects
The following projects demonstrate how complex geometry, demanding tolerances and low-volume production requirements can be addressed through process planning, custom fixturing and dimensional inspection.
5-Axis CNC Machining of Formula Racing Front Uprights
Industry: Automotive and Motorsports
Part: Front Uprights / Steering Knuckles
Material: Aluminum 7075-T6
Process: 5-Axis CNC Machining
Production Type: Low-Volume Manufacturing
Finish: As Machined
Critical Accuracy: ±0.01 mm
Lead Time: 10 Working Days
Manufacturing Challenge
The uprights contained multiple functional faces, precision bores and threaded mounting features that had to maintain accurate positional relationships.
Machining from a solid 7075-T6 billet also required significant material removal while controlling deformation in lightweight sections.
Production Approach
The parts were produced using 5-axis single-setup machining to reduce repeated repositioning. High-speed roughing, precision boring, rigid tapping and controlled finishing were applied to maintain feature relationships and surface quality.
Inspection
Critical dimensions and threads were verified using pin gauges, thread gauges, manual inspection and CMM measurement before delivery.
How to Order Custom CNC Machined Parts
1.Upload Your CAD Files
Send your 3D model, 2D drawing, quantity, material, surface finish and any inspection requirements.
2.Engineering Review and Quote
Our engineers review geometry, tolerances, material selection, machining access and potential cost drivers before preparing the quotation.
3.Confirm Specifications
Confirm pricing, lead time, material, finish, critical dimensions, quality documentation and shipping requirements.
4.Machining and Inspection
Parts are machined according to the approved requirements and checked through in-process and final inspection.
5.Finishing and Global Delivery
Completed parts receive the agreed surface treatment, documentation, packaging and international shipment.
Your files and project information are treated as confidential. An NDA can be signed before detailed project review when required.
CNC Machining for Demanding Industries
Our CNC machining capabilities support engineers, product developers and purchasing teams across industries where dimensional accuracy, material performance and reliable delivery are critical.
Aerospace
Complex aluminum, titanium and high-performance alloy components for structural, test, fluid-control and equipment applications.
Medical Devices
Precision metal and plastic components for medical devices, diagnostic equipment, laboratory systems and product-development projects.
Automotive and Motorsports
Custom suspension parts, hubs, housings, fixtures, powertrain components and vehicle-development prototypes.
Robotics and Automation
Actuator housings, end effectors, shafts, brackets, fixtures, structural parts and motion-control components.
Energy
Machined components for valves, pumps, fluid systems, heat-transfer equipment, test systems and energy infrastructure.
Industrial Equipment
Custom tooling, machine components, connectors, replacement parts, fixtures and precision mechanical assemblies.
Why Buyers Choose Baosheng for CNC Machining
A successful CNC machining project requires more than machine capacity. It also depends on clear communication, engineering review, documented inspection and reliable project follow-up.
Direct Engineering Communication
DFM Support Before Production
Flexible Order Quantities
Documented Quality Control
Your questions answered
CNC Machining FAQs
What information do you need for a CNC machining quote?
Please provide a 3D CAD file, 2D drawing where available, required quantity, material, surface finish, delivery location and any critical tolerance or inspection requirements.
STEP or STP files are preferred for quotation, while a dimensioned PDF or DWG drawing should be included for critical features.
What CNC machining tolerances can you achieve?
General tolerances are applied according to the drawing and project requirements. Dimensional tolerances down to ±0.025 mm are available for suitable features, while selected critical dimensions down to ±0.01 mm can be evaluated after reviewing geometry, material and inspection requirements.
Is there a minimum order quantity?
There is no strict minimum order quantity for CNC machining. We support projects ranging from one-off prototypes to low-volume batches and repeat production orders.
How long does CNC machining take?
Suitable prototype projects can be completed from approximately five business days. Actual lead time depends on part complexity, material availability, quantity, tolerance, surface finishing and inspection requirements.
Can you provide material certificates and inspection reports?
Yes. Depending on project requirements, available documents may include material certificates, dimensional inspection reports, CMM reports, First Article Inspection reports and Certificates of Conformance.
Which materials can you CNC machine?
Common materials include aluminum, stainless steel, steel, titanium, brass, copper, Inconel, PEEK, POM, nylon, polycarbonate, PTFE and other engineering metals and plastics.
Can you provide surface finishing after machining?
Yes. Available options include anodizing, hard anodizing, bead blasting, powder coating, painting, passivation, electropolishing, nickel plating, zinc plating and polishing.
Related Resources
Get a Quote for Your CNC Machined Parts
Upload your CAD files and project requirements. Our engineering team will review manufacturability, material, tolerances, finishing, inspection and estimated lead time before providing a quotation.
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