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Tumbling and Finishing

Smooth out edges, remove burrs, and clean up surfaces in one pass. Our tumbling and finishing services handle the secondary work that gets your machined and molded parts ready for use.

Mold finished to perfection

CNC machining, milling, and turning leave behind sharp edges and small burrs. So does plastic molding, especially around gates and parting lines. Tumbling and finishing remove those marks in batches, faster and more consistently than working each part by hand.

The process loads parts into a rotating barrel or vibratory bowl with abrasive media. As the parts move against the media, burrs break off, edges round over, and surfaces smooth out. Wet tumbling adds water and a compound to clean the parts and protect the finish. Dry tumbling is used for specific surface effects or when water is not the right call for the material.

We finish machined metal parts and molded plastic parts in our shop. The right method, media, and cycle time depend on the material, the part shape, and the finish you need. Our team picks all three so you get parts that look right and feel right when they leave.

Our Process

We look at your part, your material, and the finish you need. Burr removal, edge break, surface polish, and pre-plating prep all call for different setups.

Vibratory finishing works well for fine deburring and polishing without rounding sharp features too much. Barrel tumbling is faster and more aggressive, and works best for batch parts that can take rougher handling. Media is matched to the job, including ceramic for hard metals, plastic for softer parts, and organic media like corn cob or walnut shell for polishing.

Wet tumbling adds water and a compound to lubricate, clean, and brighten the finish. Dry tumbling is used for surface effects, light polishing, or materials that should not see water.

Cycle times are set based on the material, the burr load, and the finish target. Parts are pulled and checked along the way to keep them from over-finishing. Final inspection confirms edges, surfaces, and dimensions before parts move on.

Parts are rinsed, dried, and packaged or sent to the next step in your build. That might be assembly, plating, painting, or shipment.

Start Your Tumbling and Finishing Project

Contact Us

✉ info@freeformpolymers.com
  • (435) 774-9090
  • Open 8AM - 5PM Mon-Friday

Contact Us

✉ info@freeformpolymers.com
  • (435) 774-9090
  • Open 8AM - 5PM Mon-Friday