What are the benefits of 5-axis CNC milling?

5-axis machining allows us to machine complex parts from all angles in a single setup. This reduces lead time, improves accuracy by eliminating multiple fixturing steps, and enables the production of intricate geometries—like impellers, turbos, and medical implants—that are impossible with 3-axis mills.

Can you machine thin-wall aluminum parts without deformation?

Yes, machining thin-wall aluminum components is a specialty. We use specialized fixturing, optimized toolpaths, and high-speed machining strategies to manage cutting forces and heat, ensuring dimensional stability and preventing part distortion.

What is the maximum size of parts you can mill?

Our large-format CNC mills can handle parts up to 1500mm x 800mm x 600mm (X, Y, Z). Please contact us with your specific dimensions for confirmation.

Do you offer custom CNC milling parts from my design?

Absolutely. We are experts at producing custom CNC milling parts directly from your CAD data. We provide DFM feedback to ensure your design is optimized for manufacturability, cost, and performance.

What surface finish options do you offer for milled parts?

Beyond the standard milled finish, we offer bead blasting, brushing, anodizing (for aluminum), and powder coating. We can achieve surface finishes as fine as Ra 0.8 μm for critical cosmetic or functional surfaces.

CNC Milling

What is CNC milling?

CNC milling uses rotational cutting tools to remove material from a workpiece to produce finished parts and products. This manufacturing process works well for many materials, including metals, polymers, wood and glass. CNC milling systems generally have 3 linear degrees of freedom: the X, Y and Z axis. This allows for top-notch precision and detailing. Sunnyhowe also offers more advanced, 5-degree systems, where the tool head and machining bed (A and B axis) can also rotate. 5-axis CNC machines can produce parts with high geometric complexity without needing multiple machine setups.

Learn more about CNC milling

Maximum part size for 3- and 3+2-axis CNC milling

There are several types of CNC milling machines, each with its own distinct maximum part size. 3-axis and 3+2 axis machines have the lowest start-up costs and can produce parts with relatively simple geometries.

3-axis milling

Size	Metric units	Imperial units
Max. part size for soft metals [1] & plastics	2000 x 1500 x 200 mm 1500 x 800 x 500 mm	78.7 x 59.0 x 7.8 in 59.0 x 31.4 x 27.5 in
Max. part for hard metals [2]	1200 x 800 x 500 mm	47.2 x 31.4 x 19.6 in
Min. feature size	Ø 0.50 mm	Ø 0.019 in
[1] : Aluminum, copper & brass [2] : Stainless steel, tool steel, alloy steel & mild steel

3+2 axis milling

Size	Metric units	Imperial units
Max. part size for soft metals [1] & plastics	2000 x 1500 x 200 mm	78.7 x 59.0 x 7.8 in
Max. part for hard metals [2]	1200 x 800 x 500 mm	47.2 x 31.4 x 19.6 in
Min. feature size	Ø 0.50 mm	Ø 0.019 in
[1] Aluminum, copper & brass [2] Stainless steel tool steel, alloy steel & mild steel

Maximum part size for 5-axis CNC milling

The more advanced of the milling machine family, 5-axis centers can produce parts with more complex geometries. These machines require fewer machine setups so they are more productive.

Size	Metric units	Imperial units
Max. part size for all materials	2000 x 1500 x 200 mm	78.7 x 59.0 x 7.8 in
Min. feature size	Ø 0.50 mm	Ø 0.019 in

Multi-Axis CNC Milling Parts Gallery

Browse our collection of complex components machined with 3+2 and 5-axis CNC milling technology. These parts highlight our expertise in producing intricate geometries, deep cavities, and thin-wall features in aluminum, steel, and engineering plastics.

Aluminum 7075-T6 laser cavity with 0.01mm concentricity

Aluminum 7075-T6 Cavity


Purpose	Laser equipment cavity
Process	CNC machining
Material	Aluminum 7075-T6
Surface finish	Bead Blasted + Anodized type II
Unit price	€1678.58
Industry	Industrial automation

CNC Milled Black Anodized Aluminum 6061 Components

Black Anodized Aluminum 6061 Parts


Purpose	Milling industrial machinery fixtures
Process	CNC machining
Material	Aluminum 6061
Surface finish	Anodized black
Unit price	€56.58
Industry	Industrial machinery

Brass Nozzle CNC Machining


Purpose	Precision inspection instrument parts
Process	CNC machining
Material	Brass
Surface finish	As Machined
Unit price	€166.58
Industry	Industrial machinery

Sealed 316L stainless steel cavities for medical fluid handling

Stainless Steel 316L Medical


Purpose	Medical equipment cavity
Process	CNC machining
Material	Stainless steel 316L
Surface finish	Anodizing clear
Unit price	€336.8
Industry	Medical

CNC milled 304 stainless steel mounting brackets for surgical equipment

Stainless Steel 304 Parts


Purpose	Medical equipment cavity
Process	CNC machining
Material	Stainless steel 304
Surface finish	Anodizing clear
Unit price	€136.8
Industry	Medical

5-Axis Aluminum 7075


Purpose	Aluminum alloy connecting rod
Process	CNC machining
Material	Aluminum 7075
Surface finish	Clear
Unit price	€136.38
Industry	Industrial automation

Available materials for CNC Milling

Metals

A wide range of metals for CNC machining, with applications in multiple industries. Ideal for both one-off prototypes and end-use custom parts.

Browse CNC milling metal materials

Plastics

A wide range of plastics for CNC machining, with applications in multiple industries. Ideal for both one-off prototypes and end-use custom parts.

Browse CNC milling plastic materials

CNC milling surface finishes

Improve your part’s performance by selecting high-quality surface finishes that enhance the roughness, hardness, chemical resistance and cosmetic features of your finished component.

Browse CNC milling surface finishes

CNC milling tolerances

We follow ISO 2768 standards for CNC machining.

Limits for nominal size	Plastics (ISO 2768- m)	Metals (ISO 2768- f)
0.5mm* to 3mm	±0.1mm	±0.05mm
Over 3mm to 6mm	±0.1mm	±0.05mm
Over 6mm to 30mm	±0.2mm	±0.1mm
Over 30mm to 120mm	±0.3mm	±0.15mm
Over 120mm to 400mm	±0.5mm	±0.2mm
Over 400mm to 1000mm	±0.8mm	±0.3mm
Over 1000mm to 2000mm	±1.2mm	±0.5mm
Over 2000mm to 4000mm	±2mm
*Please clearly indicate tolerances for nominal sizes below 0.5mm on your technical drawing.

Precision CNC Milling Workshop & Capabilities

Our milling department is built for complexity and scale. We leverage multi-axis technology to deliver complex custom CNC milling parts with the accuracy and surface finish your projects demand.

Integrated CNC Machining Workshop

Our in-house facilities allow us to quickly complete your project. As we have multiple CNC turning, milling and die casting equipment. Low prices and fast delivery times.

Precision Wire EDM Machining

Our Wire EDM workshop features four advanced Sodick VL400Q machines, delivering ±0.002mm precision, superior surface finishes (Ra < 0.2µm), and capabilities for complex geometries in all conductive materials. Get a quote for your precision parts.

3D printing room

The application of industrial 3D printers in CNC (Computer Numerical Control) technology represents a significant shift in the manufacturing industry.

CMM workshop

The CMM three-coordinate measuring machine (also known as the three-dimensional coordinate measuring machine) plays a pivotal role in CNC processing, 4 units in total, accuracy 0.003mm, with the following main functions

Surface finishing workshop

We can provide high-precision metal surface treatment technology solutions and services for machined parts

Quality Inspection Department

Our in-house facilities allow us to quickly complete your project. As we have multiple CNC turning, milling and die casting equipment. Low prices and fast delivery times.

Assembly workshop

Our in-house facilities allow us to quickly complete your project. As we have multiple CNC turning, milling and die casting equipment. Low prices and fast delivery times.

Grinding machine center

The grinding machine center has 6 small grinders and 3 flat and large grinders. The equipment is produced in Taiwan and has higher precision.

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5-Axis CNC Milling Service for Complex Parts

What is CNC milling?

Maximum part size for 3- and 3+2-axis CNC milling

3-axis milling

3+2 axis milling

Maximum part size for 5-axis CNC milling

Multi-Axis CNC Milling Parts Gallery

Available materials for CNC Milling

Metals

Plastics

CNC milling surface finishes

CNC milling tolerances

Precision CNC Milling Workshop & Capabilities

Why Choose

FAQ's about CNC milling service

What are the benefits of 5-axis CNC milling?

Can you machine thin-wall aluminum parts without deformation?

What is the maximum size of parts you can mill?

Do you offer custom CNC milling parts from my design?

What surface finish options do you offer for milled parts?

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