Mass finishing provides a range of powerful solutions for finishing small parts in bulk. Vibratory and tumbling mass finishing machines produce smooth, impressive finishes quickly, efficiently and inexpensively.

Small parts often require finishing due to burrs, sharp edges and lime scale that form on their surfaces. The task of finishing small components can pose a challenge to manufacturers because small parts can be tricky to work with.

Various processes have been developed for smoothing, finishing and pre-finishing small components. Mass finishing allows large assortments of parts to be finished all at once through various tumbling and vibratory machines. Some manufacturers know mass finishing by other names, such as micro finishing and super finishing.

Finish Your Small Parts Quickly and Easily

  • Finish many parts at one time
  • Opt for extremely smooth finishes
  • Gently polish thin, delicate parts
  • Finish and pre-finish small parts

KC Jones utilizes three types of mass finishing machines: centrifugal barrel polishing machines, centrifugal disk polishing machines and vibratory bowl polishing machines. Each machine offers unique solutions for improving and finishing parts.

Centrifugal Barrel Polishing

Centrifugal barrel polishing is the fastest of all mass finishing processes. It takes place in high-energy finishing machines that rotate parts against abrasive, grinding media, This smoothes and finishes parts as contact is made.

Centrifugal Disk Polishing

Centrifugal disk polishing is ideal for use on small parts. These high-energy machines slides parts against abrasive, grinding media, which smoothes and polishes parts as the machine rotates them.

Vibratory Bowl Polishing

Vibratory bowl polishing vibrates parts against grinding media which smoothes and finishes parts, improving their surface characteristics.

Explore a Wide Range Mass Finishing Solutions

A wide selection of finishing and pre-finishing processes can be performed in tumbling and vibratory machines.


Burnishing is a mass finishing process that uses vibration and the application of steel (or ceramic) grinding media to smooth and brighten the surface of metal parts. In some instances, burnishing can produce a finish that is comparable to hand polishing.Burnishing is often used to increase lubricity and to pre-plate, which enhances the luster of parts after plating.

Edge Break

Sharp edges (burrs) can form on metal surfaces when they go through processes like stamping and machining. This can make it very difficult to handle parts. Vibration machines remove burrs and produce smooth, safe edges. Edge breaking also produces a higher performing radius.


Burrs are small, raised edges of excess metal that remain attached to surfaces after they have been modified in some way.

Machining processes like grinding, drilling, milling and engraving cause burrs. Vibration polishing is an effective way to remove burrs and to prepare metal surfaces for use.


Radiusing rounds or removes sharp edges that sit on metal surfaces after they have been through other manufacturing processes.

These sharp edges can catch on other components in application, leading to malfunctions. They can also make parts difficult and dangerous to handle.


Welded and heat-treated parts often develop lime scale, which inhibits their performance. Descaling removes lime and heat scale and improves the surface quality of parts.

Mass finishing allows you to finish and pre-finish bundles of parts, all together, at one time. Choose from a myriad of solutions to meet whatever surface challenges your application throws at you.

Mass Finishing is the Most Effective Way to Finish Small Parts

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