Learning Center


Tumbling is the simplest way for jewelry makers to polish their pieces. Our articles cover the tumbler devices and abrasive media you’ll need.

Tumbling Technique Hints

When burnishing very detailed pieces, use stainless pins in your mixed shot. Don’t use them any other time because the pins will often strike the work pieces with the pointed ends, creating a very undesirable pitting or orange peel appearance.…

Mass Finishing of Gold Jewelry

Design dictates buyer’s choices when gold jewelry is purchased and the quality of the pieces certainly plays an important part as well. Not to be overlooked, However, as gold jewelry is readied to go to market, is that shoppers, regardless…

Vibratory Finishing Method

Chemical and mechanical processing work together to treat the vibratory finishing wastewater at Aro-Sac, increasing production, making the water reusable and rendering the sludge a non-hazardous waste…

Practical Guide to Mass Finishing Jewelry

A microscopic and technical view of mass finishing presented in layman’s terms. Understanding of mass finishing must start at the very basic level of what happens microscopically to the surface of various materials. All the variables will…

Fixing Magnetic Finisher with MF610

After several years of use, the small stainless-steel pins in my magnetic finisher had became dark, were stuck together and yielding poor results when tumbling precious metal mountings. Seeking advice for improvement, I turned to Andy Kroungold,…

Basic Principles for Wet Tumbling on Gold Jewellery

The correct use of modern, semi- automated finishing processes enables the manufacturer not only to reduce production costs, but also to improve the quality of finish on jewellery produced in series. This is the first of several articles,…