Bench Grinders and Sanders: Double-Wheel, Wet and Belt Models

A double-wheel bench grinder suits sharpening tools, cutters and drill bits, a low-speed water-cooled sharpener does not overheat knives and chisels, and a belt and disc sander suits shaping and finishing wood and metal parts. On sanding belts: how to choose a sanding belt.

Compare wheel diameter (usually 150–200 mm), width and grit: a coarse wheel removes metal quickly, while a fine wheel gives a sharp, smooth edge. See how to choose a grinding disc and what is sandpaper grit.

Higher power lets you press the tool without the speed dropping, while speed control or a low-speed mode helps with fine sharpening and heat-sensitive steels. See how to choose tool power (W) and what is rotational speed (RPM).

Adjustable tool rests hold the tool at the right angle, clear eye shields protect against sparks, and work-area lighting improves visibility. Always wear safety glasses as well: how to choose safety glasses.

A heavy cast-iron base and balanced wheels reduce vibration, and the machine should be bolted to a bench or stand. On vibration: what is vibration level.

Grinding produces dust and sparks, so wear a respirator and keep flammable materials away. See how to choose a respirator and essential fire safety rules.

Before work, check the wheel for cracks, keep a small gap between the tool rest and the wheel, never stand in the plane of rotation and do not use the side of the wheel unless it is designed for it. Read how to work safely with stationary machines and essential power tool safety rules.