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.
Flap discs offer the main advantage of being able to provide finer finishes than grinding wheels and can perform on uneven surfaces, but they also have several other benefits:
Ability to vary pressure as needed to provide a coarser or smoother finish
Cooler operation, which means you’re less likely to leave scorch or heat marks
Less vibration and fatigue for more comfortable operation
Improved safety because there are no pieces to shatter or fly off
Better finish with less gouging for improved appearance