A bench grinder is a versatile and powerful stationary tool commonly found in workshops and garages. It consists of a motor that drives two rotating abrasive wheels, typically made of bonded abrasive particles such as silicon carbide or aluminum oxide. One wheel is usually coarse for initial grinding and shaping tasks, while the other wheel is finer for precision grinding, sharpening, and polishing.The coarse wheel is ideal for removing material quickly and efficiently, such as rust, burrs, or excess metal from rough-cut edges. It's commonly used for sharpening dull blades, shaping metal pieces, and cleaning metal surfaces before welding or painting. The fine wheel provides a smoother finish and is perfect for honing and sharpening tools like chisels, drill bits, and knives to a razor-sharp edge.Bench grinders come in various sizes and configurations, offering different motor powers, wheel sizes, and adjustable tool rests and eye shields for added safety and precision.