From Rough to Smooth: The Stages Of Rock Polishing for Beginners
WEBAug 24, 2023 · Coarse Grinding. The first stage of rock polishing is coarse grinding. This stage involves using a coarse grit, usually between 60 and 90 mesh, to grind down the rough edges of the rocks. This stage takes about 710 days to complete. During this stage, the rocks will become smaller and more rounded.