Custom CNC Milling Services by BSG
High-precision 3-axis, 4-axis, and 5-axis CNC milled parts delivered in as fast as 3 business days, from rapid prototyping to high-volume production, manufactured across BSG's certified Balkan network.
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Our CNC Milling Capabilities
BSG matches your part to the right machine configuration, from cost-effective 3-axis milling to simultaneous 5-axis machining for complex, aerospace-grade geometries.
3-Axis Milling
Best for simple geometries and cost-effective production. The workpiece moves along X, Y, and Z axes while the tool machines from a single orientation, ideal for flat and prismatic parts.
4-Axis Milling
Best for parts requiring multi-sided machining. A fourth rotational axis lets the part be machined from multiple faces in a single setup, reducing repositioning and improving accuracy.
5-Axis Milling
Best for complex, aerospace-grade geometries without repositioning. Simultaneous 5-axis motion reaches compound angles and undercuts in one setup, minimizing fixturing error on critical parts.
| Parameter | Specification |
|---|---|
| Max Part Size | 80" x 48" x 24" (2,032 x 1,219 x 610 mm) |
| Standard Tolerances | ±0.005" (±0.1 mm) |
| Precision Tolerances | ±0.001" (±0.025 mm) |
| Equipment | 3-axis, 4-axis, and simultaneous 5-axis machining centers |
| Quality Inspection | First Article Inspection (FAI), CMM reporting |
| Material Certification | Mill certificates available on request |
| Certifications | ISO 9001:2015 |
CNC Milling Materials
BSG offers over 50 engineering-grade metals and plastics, matched to your part's mechanical and environmental requirements.
Aluminum
Lightweight and highly machinable, the default choice for prototypes and structural parts.
Stainless Steel
Corrosion-resistant and strong, with 17-4 offering high strength for structural and aerospace parts.
Titanium
Exceptional strength-to-weight ratio and biocompatibility for aerospace and medical components.
Brass
Excellent machinability and conductivity, common in fittings and electrical components.
Copper
High electrical and thermal conductivity for connectors and heat-transfer parts.
Surface Finishes for CNC Milled Parts
Functional and cosmetic finishing options applied after milling, matched to your part's material and end use.
As-Machined
The standard finish directly off the mill, functional and cost-effective, with visible tool marks.
Bead Blasted
A uniform matte, satin texture achieved by blasting the surface with fine glass or ceramic media.
Anodized (Type II & III)
Electrochemical coatings that improve corrosion resistance and wear resistance, with Type III (hardcoat) suited to high-abrasion applications.
Powder Coated
A durable, color-customizable coating applied as a dry powder and cured under heat for a hard, protective finish.
Electroless Nickel Plating
A uniform, corrosion-resistant nickel coating applied without electrical current, ideal for complex geometries.
Passivation
A chemical treatment that removes free iron from stainless steel surfaces, restoring maximum corrosion resistance.
The BSG Advantage for CNC Manufacturing
A certified network of precision milling facilities, managed end-to-end by BSG.
Rapid Turnaround
Quotes in hours, parts in days, without compromising on inspection or documentation.
Strict Quality Control
First Article Inspection (FAI), material certificates, and CMM reports available on every order.
Scalability
We handle 1 prototype or 10,000 production units through the same certified network.
Expert DFM Feedback
Our engineers review your CAD files to identify ways to reduce machining cost and lead time.
CNC Milling FAQs
Common questions about our CNC milling services, tolerances, file formats, and design for manufacturability.
Why Companies Choose BSG
We combine Balkan production economics with European engineering standards and a single-contract model.
Confidence
You always know who manufactures your parts and how.
- Verified supplier network
- Full production transparency
- Direct factory communication
Control
BSG personally oversees the entire project from start to finish, working directly with engineers at our partner facilities.
- Dedicated point of contact
- Real-time progress updates
- On-demand inspections
Capacity
Access unused production capacity across a verified network of Balkan factories.
- 50+ manufacturing partners
- Scalable production volumes
- Multi-technology access
Cost Down
Lower European cost pressure without the logistical risks of moving production to Asia.
- 30-50% cost reduction
- 2-4 day EU delivery
- No ocean freight delays
Ready to Start Your Next Project?
Join hundreds of engineers trusting BSG for precision manufacturing.