3-axis and 3+2-axis CNC milling

3-axis and 3+2 axis CNC milling machines have the lowest start-up machining costs. They are used to produce parts with relatively simple geometries.

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

[1] : Aluminum, copper & brass [2] : Stainless steel, tool steel, alloy steel & mild steel
 

5-axis CNC milling
 

5-axis CNC milling centers can produce parts with complex geometries and increase productivity by minimizing the number of machine setups.

Maximum part size for 5-axis CNC milling
 

Available materials for CNC machining
 

Here is a list of our standard CNC machining materials available through our online platform.

CNC Metals

CNC Plastics

Available surface finishes for CNC machining

Surface finishes are applied after machining and can change the appearance, surface roughness, hardness and chemical resistance of the produced parts.

As Machined (standard)	Smoothed	Bead Blasted
~125 RA µin (3.2 RA µm). Minor tool marks will be visible on the part.	Parts are machined at a lower feed rate in order to achieve a surface roughness of ~62.5 RA µin (1.6 RA µm). Surface roughness can be decreased up to ~32 RA µin (0.8RAµm) upon request.	Bead blasting adds a uniform matte or satin surface finish on a machined part, removing all tool marks. Mainly used for aesthetic purposes.
Anodized Clear or Color (type II)	Anodized Hardcoat (type III)	Powder Coated
Anodizing adds a thin, hard, non-conductive ceramic coating on the surface of aluminum parts, increasing their corrosion and wear resistance. Available in a variety of colors.	Hardcoat anodizing produces a thicker ceramic coating providing excellent corrosion and wear resistance. for functional applications.	Powder coating adds a thin layer of strong, wear and corrosion resistant protective polymer paint on the surface of a part. Available in a large range of colors.
Electropolished	Black oxide	Chromate conversion coating (Alodine/Chemfilm)
Electropolishing is an electrochemical process used to polish, passivate and deburr metal parts. It is useful to reduce surface surface roughness.	Black oxide is a conversion coating used to improve corrosion resistance and minimize light reflection.	Chromate conversion coating is used to increase the corrosion resistance of metal alloys while maintaining their conductive properties.
Brushing
Brushing is produced by polishing the metal with grit resulting in a unidirectional satin finish.

Other surface finishes are also available. Learn more about our metal and plastic surface finishing capabilities here.

Tolerances

The table below summarizes the standard tolerances of the parts produced by certified 3D Hubs Manufacturing Partners. Tolerances up to .0008” (0.020mm) are available upon request.

Tightest tolerance: ±.0008’’ (0.020 mm) Tighter tolerances are examined on a case by case basis with your technical drawings.

Full size report
 

The part comes with detailed information on all required part dimensions, so you can rest assured that the part will run and assemble as designed.

Material certification
 

We provide product material certification, which can be traced back to material characteristics.

First part verification
 

We can provide two sets of parts to customers for verification according to customer requirements. After the parts are verified, we can put them into full production.