Finishing Services

Tumbling

At a glance

Applicable Materials

Colors

n/a

Texture

Slightly rounded edges, smooth, slightly matte finish, does not hide all machine marks

Can be applied with

Any finish

About the Process

Tumbling is a finishing process that is used to clean, deburr, and slightly smooth smaller parts. Tumbling uses a horizontal drum where parts are placed, along with a media, such as sand or ceramic chips. The drum rotates slowly, causing the media to slide repeatedly over the parts, breaking any sharp edges and lightly smoothing the surface. Tumbling is fairly inexpensive due to the small amount of manual labor involved to run the process.

Design considerations

  • Because parts cannot be masked prior to tumbling, consider adding features such as threads and engravings after this process.
  • Tumbling is a rough process, so parts with thin features are not ideal for this finishing option.

YOU MIGHT ALSO BE INTERESTED IN

The Ultimate Guide to CNC Finishing Options: How to Choose the Right One For Your Application

When talking about CNC machining finishing options, you might have heard about “as-machined”, “anodizing”, coatings, or blasting among others. But before going into detail for each option, we need to clarify two terms: “surface finish” and “surface finishing”. Sometimes they are misused, which can create confusion. Surface finish: Surfaces have characteristics produced by the manufacturing […]

Learn More

Cutting Tools Used in CNC Machining – Choose the Right Tool for the Job

As a mechanical engineer or designer, how much time do you spend thinking about how your parts are going to be machined? Even more specifically, do you know what kinds of tools will be used to make different features or geometries? This article will be your guide to the most common tools used in CNC […]

Learn More