WHAT IT DOES
Cordless angle grinders is used to cut metal, brick, stone, mortar and other masonry; grind metal; clean off rust; or prep metal for welding, when you don't have access to mains power. It work by rotating a disc (specific to each material) at very high speed to cut or grind material using abrasion.. The grinder can be quite power-hungry, so it may be a good idea to have a spare battery to hand. A corded angle grinder may be a better choice for big jobs.