With a simple homebrew attachment, [Darek] turned his angle grinder into a micro-belt sander that’s great for ... keeps the belt under tension. The belts themselves are cut down from wider ...

Belt sanders are typically handheld power tools that can be either corded or battery-powered. These sanders are highly versatile, though they are commonly equipped with coarse-grit sanding belts ...

A wide belt sander is usually a woodworking tool, and it invariably includes a dust bag. Those with narrow belts (also called power files) can often be used on metal, and may not have a dust bag.