Question

what is an angle grinder used to grind? hard, heavy materials imperfections in wood soft, porous materials nonmetals only

Explanation:

An angle grinder is a powerful tool with a high - speed rotating disc. It is designed for heavy - duty tasks. Hard, heavy materials like metal, concrete, and stone require a tool with sufficient power and abrasive capability, which an angle grinder provides. Imperfections in wood are usually handled by tools like sanders (for finer sanding) or planers (for more significant shaping). Soft, porous materials would be damaged or not effectively worked on by the aggressive action of an angle grinder. And it is not limited to non - metals only as it can work on metals (a type of hard, heavy material) as well.

Answer:

hard, heavy materials