The term that describes the coarseness of a grinding stone's abrasive is called what?

The term that describes the coarseness of a grinding stone's abrasive is called what?

• A. Grit
• B. Hardness
• C. Toughness
• D. Polish

Answer: (A)

Grit describes the coarseness of a grinding stone's abrasive. Grit is the size of the abrasive particles—the larger the particles, the coarser the grit and the more material is removed with each pass, leaving a rougher surface. A finer grit uses smaller particles, resulting in gentler cutting and a smoother finish. This idea helps explain why you’d pair coarse grits for rapid material removal with finer grits for finishing. The other terms describe different properties: hardness is how resistant the abrasive is to wear, toughness is how well it resists fracturing, and polish refers to the final smooth appearance, not the particle size.

Grit describes the coarseness of a grinding stone's abrasive. Grit is the size of the abrasive particles—the larger the particles, the coarser the grit and the more material is removed with each pass, leaving a rougher surface. A finer grit uses smaller particles, resulting in gentler cutting and a smoother finish. This idea helps explain why you’d pair coarse grits for rapid material removal with finer grits for finishing. The other terms describe different properties: hardness is how resistant the abrasive is to wear, toughness is how well it resists fracturing, and polish refers to the final smooth appearance, not the particle size.