How much grit is in rock tumblers?

Answer There are three steps to the tumbling process. The amount of grit that is used to shape the rocks depends on the size of the rock tumbler. When using the standard 60/90 coarse grit silicon carbide ... Read More »

Top Q&A For: How much grit is in rock tumblers

How much grit is needed for vibrating tumblers?

In a vibratory tumbler, you should start with a medium grit of around 200, never a coarse grit of 100. Once you've removed the chips and indentations, you can go to a fine grit, like 600, and then ... Read More »

Can tervis tumblers go in the microwave?

On One Hand: Most Tervis Tumblers are Microwave-SafeAccording to the Tervis Tumbler website,, the company's insulated drinkware is manufactured from "a high-quality polymer" and are safe... Read More »

How to Clean Cut Glass Tumblers?

Cut glass tumblers can be fragile and rough cleaning can damage them. This article demonstrates a means for cleaning that is both gentle and environmentally friendly.

Are Tervis tumblers BPA-free?

According to Tervis Tumbler, their products do contain Bisphenol A (BPA), although the company maintains that you would have to eat or drink 1300 pounds of food that have been in contact with the p... Read More »