Flap Disks grind and finish in one operation. They are manufactured using a high- performance zirconium grain that outlasts standard zirconium and aluminum oxide grains up to 30%. Available in 36, 60 and 80 grit.
Individual FLAPS are designed to wear away evenly and present a constantly fresh working surface. They provide a cooler and more efficient grinding effect than conventional disks. No back-up pads required. Best used for grinding and polishing of metals, blending of welds and other metal finishing.
Flap discs offer right angle grinding versatility with a product that can grind and finish in a single operation. The abrasive flaps are adhered to a rigid backing plate. Flap discs are favored among operators due the fact that flap discs are lighter in weight, easier to control, and they feature cooler cutting which is visible in its reduced gouging and burningt!
.They are used for surface blending, removing paint from metal, smoothing, edge, and contour work. It's a handy tool that can be used in place of sanding discs or grinding wheels quickly with a lot of the same outcomes.
T27 is flat and T29 is curved.
They work best from a 0-15° angle and T29 at an angle of 15-25°. This angle allows the T29 flap disc to be used for both edge and contouring work. They are favored due to the angle that allows for the operator to have greater surface coverage for stock removal on flat surfaces.
The curved angle of the T29 Flap Disc allows for more leverage and thus more pressure in their use which would allow the user to grind more aggressively than with the T27 Flap Disc. The angle of a T29 Flap Disc also allows for polishing and grinding at one time increasing productivity of the operator.
For a flat surface the T27 is your best choice.