Custom CNC Milling Service

High precision CNC milling parts manufacturer from China. Dedicated rapid prototyping and low-volume manufacturing services.

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From 1 to 1,000 parts
Lead time as fast as 1 day

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Enhanced custom parts CNC milling experience

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Our CNC Milling Capabilities

RapidDirect provides 3 axis, 4 axis CNC milling, and 5-axis CNC milling centers according to your custom needs, from rapid prototyping to production parts.

3-axis, 4-axis CNC Milling

3-axis and 4-axis CNC milling machines are the most commonly used CNC milling process, which has lower tolerance level, but more affordable price. We recommend 3-axis or 4-axis CNC mill machining for producing parts with simple geometries.

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5-axis CNC Milling

5-axis CNC milling center represents the highest manufacturing capabilities that CNC milling service could reach. It has higher price, but significantly higer efficiency comparing with 3-axis CNC milling, more suitable for producing parts with complex geometries.

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Materials for CNC Milling Parts

The various available materials is another advantage of CNC milling. At RapidDirect, you can choose from over 50 milling metals and plastics. In addition, we also provide material certification at your request.

Aluminum

Aluminum is a highly ductile metal, making it easy to machine. The material has a good strength-to-weight ratio and is available in many types for a range of applications.

Price:

Lead Time:

< 10 days

Wall Thickness:

0.75 mm

Tolerances:

±0.125mm (±0.005″)

Max part size:

200 x 80 x 100 cm

Copper

Copper displays excellent thermal conductivity, electrical conductivity and plasticity. It is also highly ductile, corrosion resistant and can be easily welded.

Price:

$$$

Lead Time:

< 10 days

Wall Thickness:

0.75 mm

Tolerances:

±0.125mm (±0.005″)

Max part size:

200 x 80 x 100 cm

Brass / Bronze

Brass has desirable properties for a number of applications. It is low friction, has excellent electrical conductivity and has a golden (brass) appearance.

Price:

$$$

Lead Time:

< 10 days

Wall Thickness:

0.75 mm

Tolerances:

±0.125mm (±0.005″)

Max part size:

200 x 80 x 100 cm

Steel

Steel is known for its high tensile strength and low costs. It is a ubiquitous material in the construction, infrastructure, automotive, maritime, tooling, manufacturing and defense industries.

Price:

Lead Time:

< 10 days

Wall Thickness:

0.75 mm

Tolerances:

±0.125mm (±0.005″)

Max part size:

200 x 80 x 100 cm

Stainless Steel

Stainless steel typically contains a minimum of 10% chromium by weight. It is a popular metal within a broad range of industries, including construction, automotive, aerospace and more.

Price:

Lead Time:

< 10 days

Wall Thickness:

0.75 mm

Tolerances:

±0.125mm (±0.005″)

Max part size:

200 x 80 x 100 cm

Titanium

Titanium is resistance to corrosion, chemicals and extreme temperatures, and has excellent strength-to-weight ratio. It has broad adoption in the aerospace, medical and defense industries.

Price:

$$$$$

Lead Time:

< 10 days

Wall Thickness:

0.75 mm

Tolerances:

±0.125mm (±0.005″)

Max part size:

200 x 80 x 100 cm

Plastics

Plastic is an indispensable part of our everyday world. It is known for its lightweight, high strength-to-weight ratio, electric insulation, low price, suitable for mass production, etc. The application of plastics is so wide that you can always see it in all industries.

POM
Nylon
ABS
PEEK
PTFE
PC
HDPE
PVC
PMMA
PET
PP

Surface Finishes for CNC Milling

CNC milling parts are left as-milled, and surface finish can change the appearance, surface roughness, hardness and chemical resistance of the produced parts. Determined by the material using, a part can have one to serval available surface finishing options. Learn more at our surface finish page.

Anodizing

Anodizing changes the surface state and performance of the material, thus improving corrosion resistance, enhancing wear resistance and hardness, and protecting the metal surface.

Materials:

Aluminum

Color:

Clear, black, grey, red, blue, gold.

Texture:

Smooth, matte finish.

Thickness:

1.8 μm to 25 μm (0.00007")

Bead Blasting

Bead blasting directs abrasive material onto the surface, so as to alter and improved the properties of the workpiece surface - such as roughness and uniformity.

Materials:

ABS, Aluminum, Brass, Stainless Steel, Steel

Colors:

n/a

Texture:

Matte

Standards:

Sa1, Sa2, Sa2.5, Sa3

Applications:

Cosmetic parts

Powder Coating

Powder coating is a surface finishing technique used to create a hard finish tougher than normal paint. Commonly used for coat metal parts.

Materials:

Aluminum, Stainless Steel, Steel

Colors:

Black, any RAL code or Pantone number.

Texture:

Gloss or semi-gloss

Applications:

Vehicle parts, household appliances, aluminum extrusions

Electroplating

Electroplating bonds fine layers of metal to the surface of another metal, thus reaching either functional, decorative, or corrosion-related properties.

Materials:

Aluminum, Steel, Stainless Steel

Plate type:

Tin, Nickel, Electroless Nickel

Texture:

Smooth, glossy finish

Applications:

Electrical connections, jewelry, radiation shields

Subtypes:

Galvanizing, nickel plating, tin plating, passivation

Polishing

Polishing is the process of creating a smooth and shiny surface, it produces a surface with significant specular reflection, so as to improve the appearance of new or used metal parts.

Materials :

Aluminum, Brass, Stainless Steel, Steel

Colors:

n/a

Texture:

Glossy

Types:

Mechanical polishing, chemical polishing

Applications :

Lenses, jewelry, sealing parts

Brushing

Brushing is a surface treatment process in which abrasive belts are used to draw traces on the surface of a material, usually for aesthetic purposes. Most commonly applied to aluminum.

Materials:

ABS, Aluminum, Brass, Stainless Steel, Steel

Colors:

n/a

Texture:

satin

Standards:

Sa1, Sa2, Sa2.5, Sa3

Applications:

Cosmetic parts

Painting

Painting involves spraying a layer of paint onto the surface of the part. It can improve the part's aesthetic appearance and can add a protective layer on the parts.

Material:

Aluminum, Stainless Steel, Steel

Color:

Black, any RAL code or Pantone number.

Applications:

Household appliances, vehicle parts, aluminum extrusions

Textures:

Gloss, semi-gloss, flat, metallic, textured

Our Quality Promise

ISO 9001:2015 certification
Full dimensional report *
Material certification *
First article inspection *
Rework & refund policy
NDA agreement *

Items with * provide on request before order placement.

What is CNC Machining

About the CNC Process
CNC, or computer numerical control machining, is a subtractive manufacturing method that leverages a combination of computerized controls and machine tools to remove layers from a solid block of material. The desired cuts in the metal are programmed according to corresponding tools and machinery, which perform the machining task in an automated fashion.

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