flap disc

Flap discs are flexible, and will tend to follow the contours of whatever you are grinding. Not much use if you want to get rid of those contours. Trick is angling the disc (maybe 20 degrees for this job) and using light pressure. Even with light pressure they are still quicker than a grinding disc. The flexibility makes them directionally sensitive too. On a curve they seem to cut more from before the weld (as the disc spins). Here I've ground the weld just about level with the thicker repair section. Primary Advantages of Flap Discs; Flap discs grind and finish at the same time, saving both time and money. Flap discs remove material aggresively. Its removal power is equal to depressed cool center wheel but it works safer and offers a better finished surface. Flap discs have a lightweight design to reduce operator fatigue. Flap disc are easy to use and requires very little surface pressure. Its especially cool cutting permits light contouring and avoids burning work-pieces by overheating. Flap discs last up to 30 times longer than conventional fibre discs due to their overlapping flap construction. Flap discs assure consistent performance as new particles are continually exposed during the life of the product. Flap discs, due to its tough construction, allows for aggresive edge grinding. Flap discs in conical shape enables the fullest contact between work-piece and disc surface. ..