Flap discs are made from multiple overlapping pieces of abrasives or 'flaps,’ which is how they got their name. Flap discs are designed for right angle grinder applications ranging from heavy stock removal to surface blending and smooth finishing.
While the first abrasive flap discs for high-speed angle grinders were developed towards the end of the 1970s and were somewhat basic, today’s versions offer an array of diversity. You should strongly consider a flap disc over a grinding wheel if you need a superior finish and greater ease of use during operation.
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