surface finishing

Media Blasting

Media blasting, also called abrasive blasting, is a process used for cleaning metal surfaces, preparing parts for additional finishes and removing rust, slag or machining scale.  The finishing effect is determined by several factors including the hardness and particle size of the media.

There are a variety of different blasting materials, or media, for obtaining the surface finish that you want to achieve.

What is Media Blasting Service?

Media blasting is used to improve the surface finish, or surface hardness, by shot peening the part. Two types of media blasting services are available. Macro blasting, commonly called sandblasting, is used on larger parts. Microblasting is used for smaller parts where the stream of abrasive is smaller and more precise. Both methods require the same ingredients: an abrasive media such as sand, prepared and pressurized to be propelled at an object.

Key Features

Applicable MaterialsColorsApplicationsTexture
Aluminum, Steel, Stainless SteelBrass, Bronze, Coppern/aCosmetic parts (the surface of your Macbook Pro has been bead blasted)Matte

About the Process

Media blasting uses a pressurized jet of abrasive media to apply a matte, uniform finish to the surface of parts. The most common media used are varying sizes of glass beads or sand, though for other levels of abrasion, things like plastic beads have also been used.

This process is used to create a uniform, matte finish on parts, but can also be used to hide machine marks or remove small flaws in parts prior to anodizing or other plating processes.

Design considerations

  • Plugging threaded/reamed holes not required unless tolerances are very tight, as thickness change is minimal.
  • Avoid blasting thin walls, as they are prone to deformation.
  • Parts with intricate geometries may be difficult or impossible to uniformly finish.

Put your Media Blasting parts into production today