The key difference between the original sickle flap from LUKAS-ERZETT and conventional flap discs lies in its special geometry. While conventional flap discs usually work with small rectangular sanding flaps, LUKAS uses a significantly larger, curved and crescent-shaped flap structure. This seemingly simple design change has a huge impact on the entire sanding process, as the crescent shape changes both the pressure angle and the contact surface between the tool and the workpiece. The tool grips more directly, but remains easier to control and runs more smoothly. This effect is particularly noticeable and visible on weld seams, when deburring or coarse grinding on steel and stainless steel. Users achieve high cutting performance without having to increase the contact pressure unnecessarily. At the same time, the tool can be guided more precisely.

Another technical advantage of flap discs with original serrated flaps from LUKAS-ERZETT lies in the distribution of the abrasive material. With classic flap discs, a significant proportion of the abrasive grain is located in the inner area of the tool - where the peripheral speed is significantly lower. This abrasive can only develop its performance to a limited extent. In contrast, the original sickle disc from LUKAS concentrates significantly more active abrasive material in the outer area of the tool. In other words, where the highest cutting speed prevails and enables the most effective sanding effect.

As a result, the abrasive grain is utilised more efficiently and the sanding performance remains consistently high over a long period of time. The tools retain their aggressiveness for longer - and thus ensure even material removal over the entire service life. This contributes to stable and reproducible sanding processes and results, particularly with demanding materials or changing machining situations.