SFK 655 hand sanding block

SFK 655 hand sanding blocks – perfect finish
SFK 655 hand sanding blocks are universally applicable – in households, for car care or in workshops. Craftsmen and DIY enthusiasts like to use them for finishing and cleaning operations. The product is intended for hand sanding. It can be used to process:

varnishes,
glass,
stones,
wood,
plastics,
leather and
metals.
Why use SFK 655 hand sanding blocks?
Their great advantage is that hand sanding blocks have universal applications. They are therefore always the right abrasive tool, regardless of the material being processed. Silicon carbide abrasive grains embedded in a flexible binder create a much finer structure than abrasive materials with other types of binders. Therefore, sanding blocks of this type are often used for finishing and cleaning operations. In households, they are used, for example, to clean the bottoms of irons and to care for the edges of skis. They are also used to derust smaller areas in vehicles. Hand sanding blocks achieve their optimum effectiveness when used together with a cleaning agent, e.g. water, soap or additives such as petroleum or pastes.

Why are hand sanding blocks called flexible abrasives?
Hand sanding blocks have a silicon carbide grain that is bound with a flexible resin. This creates a more flexible structure than with ceramic bonds or hard synthetic resins. This flexibility keeps the roughness to a minimum and ensures that there are hardly any changes in the geometry of the workpiece. In addition to the bond, the type of abrasive grain is crucial for the grinding pattern. The silicon carbide used is hard, but not very durable. Thanks to its crystalline structure, the grain has sharp edges and is brittle. The easily broken grain guarantees constant aggressiveness. Therefore, for finishing and cleaning operations, these cubes are used until they are completely used up. Since the grain is produced synthetically, constant, top quality and specific properties are guaranteed.