Flap discs don’t offer the same level of metal removal as standard grinding wheels, and they might wear out faster and cut more slowly, so it’s important to weigh these advantages and disadvantages to determine if a flap disc or wheel is right for your job.

Flap discs are used to conform and shape metal. They have densely layered abrasive cloth flaps that can shape certain metals while leaving a finished look. They are most commonly used in welding, machining, heavy-duty equipment, industrial maintenance, agriculture and food production.