Custom CNC Machining Services
SelenPreci provides custom CNC machining services for prototypes, low-volume orders, and production parts. With in-house DFM review and process optimization, we help improve manufacturability, maintain dimensional accuracy, and control production costs.
■ Fast and reliable lead times
■ CMM dimensional inspection
■ Engineering and DFM support
Precision CNC Machining for Prototypes and Production
SelenPreci provides precision CNC machining for custom parts with various geometries and specifications. Based in Shenzhen, China, our facility features 3-, 4-, and 5-axis machining capabilities to produce components ranging from simple designs to complex geometries.
We select suitable machining processes based on your drawings, materials, and production requirements.
CNC Machining Services with Engineering & DFM Support
SelenPreci provides engineering and DFM support to evaluate part geometry, materials, and machining requirements, helping improve manufacturability and reduce production issues.
No CAD files? Share your sample parts or available drawings for manufacturing consultation.
Example: DFM Optimization Case — Automotive Engine Cylinder Block
Aspect
Before DFM
After DFM by SelenPreci
Improvement
Material
6061-T6 aluminum alloy – prone to deformation during deep cavity machining
Material stabilized through stress relief and aging heat treatment before machining
Reduced deformation
Wall Thickness
2.0 mm, uneven wall thickness leading to rigidity issue
Optimized wall structure and machining sequence for better clamping and support
Improved stability
Machining Process
Multiple milling operations + manual finishing
Optimized 5-axis CNC strategy and toolpath
30% cycle time reduction
Tolerance
Flatness ±0.05 mm, hole diameter ±0.03 mm
Flatness ±0.01 mm, hole diameter ±0.01 mm
Tighter tolerance control
Surface Finish
Ra 1.6 μm with hard anodizing
Ra 0.4 μm with Nikasil coating
Better wear and heat resistance with improved sealing and smoother finish
Cost Efficiency
Frequent rework, high material waste
Streamlined process reduced cost by 22%
Lower production cost
SelenPreci conducts DFM analysis to evaluate part designs, machining strategies, and surface treatment requirements. Our DFM reports identify potential manufacturing challenges and cost factors, helping optimize designs and improve production efficiency before manufacturing.
Our CNC Machining Capabilities
Factory-direct CNC machining services for rapid prototyping, tight tolerance requirements and responsive engineering backup. Partner with us for precision and efficiency.
CNC Milling Service
SelenPreci offers custom CNC milling for metal and plastic components. We support complex geometries, strict tolerances and consistent dimensional performance across prototype and production orders.
■ Multi-axis machining capability
■ Premium surface finishes
■ Broad range of material options
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CNC Turning Services
SelenPreci provides high-precision CNC turning for symmetrical and rotational parts. Our turning process ensures stable repeatability, tight concentricity and cost-effective production from low to high volumes.
■ Well suited for symmetrical workpieces
■ Optimized machining cycle times
■ Economical for batch orders
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CNC Grinding Services
SelenPreci delivers precision CNC grinding for high-accuracy components. We focus on ultra-tight tolerances, fine surface texture and consistent batch quality for demanding mechanical parts.
■ Tolerances down to ±0.002 mm
■ Consistent repeatability for batch runs
■ Mirror surface finish down to Ra 0.2 μm
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EDM & Wire EDM Services
SelenPreci offers EDM and wire EDM services for complex fine features, sharp internal corners and hard-to-machine materials. Our process supports high-precision part production with stable repeatability.
■ No mechanical stress imposed on workpieces
■ Handles high-hardness workpiece materials
■ Ideal for intricate profiles and micro details
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Custom CNC Machining Parts Showcase
From Drawing to Finished Parts
Advanced CNC Machining Equipment
SelenPreci's CNC machining workshop supports custom precision part production, from prototypes to repeat orders. Our team focuses on process control and dimensional accuracy, with CMM inspection available to verify critical dimensions against customer drawings.
Comprehensive Metrology & Inspection
SelenPreci performs dimensional and quality inspections to verify CNC machined parts against customer drawings and specifications.
▪ CMM dimensional verification
▪ Inspection reports upon request
▪ Drawing-based quality checks
Why Choose SelenPreci for CNC Machining
CNC Machining Services FAQ
SelenPreci supports a broad selection of materials for CNC machining. Our available materials include aluminum, stainless steel, brass, titanium and engineering plastics like POM, PTFE and PEEK. We help select proper materials according to your component’s working environment, mechanical requirements and project budget.
We can hold tight tolerances up to ±0.005mm for pvrecision CNC machined parts. The final achievable tolerance depends on part geometry, material and surface finishing requirements. Our QC team performs full dimensional inspection before delivery.
Yes. Our engineering team offers free DFM review for your CNC parts at the early design stage. We point out manufacturability risks and optimize your drawings to cut production cost and shorten lead time, for both prototype and batch orders.
We can supply material certificates, dimensional inspection reports and test documents upon request. All our custom CNC machined parts go through strict quality checks to match your drawing specifications.
Prototype orders usually take several working days. Mass production lead time varies based on part complexity, order quantity and surface treatment. We stick to our core philosophy: Precision made. Fast delivered.