What effect does firmer pressure have when using abrasives during polishing?

When using abrasives for polishing, applying firmer pressure increases the rate of abrasion. This is because greater pressure causes the abrasive particles to make more contact with the surface being polished, effectively allowing them to remove material more efficiently. The mechanics of abrasion involve the abrasive particles cutting or grinding away the surface they are applied to, and increased pressure enhances the cutting action of these particles.

Additionally, increased pressure can lead to a higher temperature at the interface, which might assist in breaking down surface contaminants or imperfections. However, while firmer pressure does increase the abrasion rate, it is also important to balance pressure with technique to avoid damaging the surface being polished. Lower pressures might be more appropriate for delicate materials or for achieving a finer finish.