Thread: polish

Grit size is only one part of the equation. Shape, hardness, size variance, toughness and medium are all hugely relevant.

This being said, many manufacturers don't say what the grit size is of their various compounds. This is because it is not that relevant to the end result.

AFAIK they make 0.5 um pastes out of Cr2O3, Diamond (C), Aluminum Oxide(Al2O3), carbides (various types) and ferric oxide (Fe2O3). The white paste Glen speaks of is probably Al2O3. Still other pastes are blends of these and contain different grit sizes that break down differently.

Polishing compounds are a very complicated thing if you want to get into the science of them.