Available Surface Finishes of CNC Machining

Surface finishing techniques can either be for functional or aesthetic purposes. Each technique has requirements, such as materials, color, texture. High-tolerance CNC milling, turning parts are not recommended to apply secondary metal surface finish, because the treatment may change the sizes of the finished part through removing or adding a small amount of materials. Below are the specifications of the plastic and metal finishing techniques rendered by us.

Finish	Description	Material	Color	Texture
As-machined	The standard finish for our parts, the “as machined” finish, has a surface roughness of 3.2 μm (126 μin), which removes sharp edges and deburs parts cleanly.	All materials	n/a	Stain
Abrasive Blasting	Abrasive blasting is the process of powerfully propelling, generally with high pressure, a stream of blast media against a surface to remove unwanted coating layers and surface impurities.	Aluminum, Steel, Stainless Steel, Brass, Copper	n/a	Matte
Anodizing	Keeping our parts in the long term, our anodizing process resists corrosion and wear. It’s also an ideal surface treatment for painting and priming, and it looks great too.	Aluminum	Clear, black, grey, red, blue, gold	Smooth, matte
Electroplating	Electroplated coating preserves the surface of parts and resists rusts and other defects from causing decay by applying electric currents to reduce metal cations.	Aluminum, Alloy Steel, Stainless Steel, Brass, Copper	Gold, silver, nickel	Smooth, glossy
Polishing	Ranging from Ra 0.8~Ra0.1, polishing processes use an abrasive material to rub the part’s surface to make them shine more less shiny, depending on your requirements.	All materials	n/a	Smooth, glossy
Powder Coating	Using corona discharge, we make the powder coating adsorbed to the part, creating a more wear-resistant layer with a typical thickness ranging from 50 μm up to 150 μm.	All metal materials	Custom	Glossy
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.	ABS, Aluminum, Brass, Stainless Steel, Steel	n/a	Satin
Painting	Painting involves spraying a layer of paint onto the surface of the part. Colors can be matched to a Pantone color number of the customer’s choosing, while finishes range from matte to gloss to metallic.	Aluminum, Stainless Steel, Alloy Steel	Custom	Gloss, semi-gloss, flat, metallic, textured
Black Oxide	Black oxide is a conversion coating similar to Alodine that is used for steel and stainless steel. It is used mainly for appearance and for mild corrosion resistance.	Steel, Stainless Steel	Black	Smooth, matte
Alodine	Chromate conversion coating, known as Alodine, is a chemical coating that passivates and protects aluminum from corrosion. It is also used as a base layer before priming and painting parts.	Aluminum	Custom	Smooth, matte