22 Our flap discs are engineered for light stock removal, blending and finishing all in one application . They grind like a depressed center wheel and finish like a fibre disc to reduce   process time and lower total grinding costs . Typical Applications: • Stock removal • Blending welds • Edge chamfering • Deburring • Rust removal • Cleaning and finishing Charger R822 Type 29 Flap Discs Features: Benefits: • High performance zirconia   • Aggressive cut and long life   alumina abrasive • Up to 30% longer life than aluminum oxide products • Durable, fiberglass back • Less pressure for aggressive stock removal and long life Two Basic Flap Disc Designs • Conical flap discs have flaps angled at 10 degrees and may be used on both conical and flat surfaces • The angle provides greater surface contact and as a result, tends to be the most aggressive choice • The best choice when speed is a primary consideration Norton Type 29 Conical / Merit Type 27C Conical Norton and Merit Type 27 Flat* The Most Aggressive Choice The Choice for the Best Finish • The Type 27 flap disc has a flat design and is used primarily on flat surfaces   • The best choice for smooth finishing • Available in Norton Jumbo / Merit High Density sizes with extra large flaps lasting up to 40% longer than standard flap discs • Choice will also depend on user preference of grinding angle (severe angle will weaken the edges) GRIND AT STEEPER ANGLES 15° –   25° 0° –   15° GRIND AT FLATTER ANGLES Norton Type 29 Merit Type 27C (Conical) Type 27 * Available on request