A flat flap wheel can handle only slight contours since it works best at more shallow angles ranging between 0° and 15°. The shape of a flap disc is what determines the type of projects you can take on.
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How to Replace Your Grinding Wheels with Flap Discs
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How to Replace Your Grinding Wheels with Flap Discs

Angle grinders are simple yet versatile power tools that can be used to cut, grind, sand and even polish. They get their versatility from the various types of discs they can be pai