Before using the stone, it must be completely soaked in water for approximately 10 minutes. Make sure, during sharpening, that there is always a slight damp film on the surface of the stone. In this way, sufficient cooling is ensured on the knife blade.

Symmetrical blades:

1- Place the stone in front of you on the work surface. Place the knife in front of you, with the sharpened edge of the blade facing you at a 45° angle to the stone and a 15° angle upwards.

2- Start sharpening at the tip of the blade. Apply enough pressure so that there is no play between the blade and the stone.

3- Push the blade on the stone away from you, maintaining this pressure, then bring it back towards you, without pressure. Continue these movements while moving your fingers toward the handle as you bring the knife toward you, until you have sharpened the entire blade. This process should be repeated several times, depending on the condition of the blade. Experience shows that at least 5 passes are necessary.

4- Flip the knife to the other side and do the same process, with the same number of repetitions.

Asymmetrical blades:

1- Place the stone in front of you on the work surface. Place the knife in front of you with the blade toward you, at a 45° angle to the stone. The sharpened side should be on the stone side. The sharpening angle is given by the angle of the sharpened side of the knife.

2- Start sharpening at the tip of the blade. Apply enough pressure so that there is no play between the blade and the stone. Keep the angle given by the blade as much as possible.

3- Push the blade on the stone away from you, maintaining this pressure, then bring it back towards you, without pressure. Continue these movements while moving your fingers toward the handle as you bring the knife toward you, until you have sharpened the entire blade. This process must be repeated several times, depending on the condition of the blade, until burr* is created. Experience shows that at least 5 passes are necessary.

4- Turn the knife over and now place the hollow side of the blade flat on the sharpening stone. Slide the knife over the sharpening stone using light pressure until the burr* is no longer noticeable. You can also remove the burr with a nylon brush or newspaper.

* the burr is a very thin layer of metal which forms during sharpening, on the side of the knife opposite the stone.

Do not put in the dishwasher, rinse the knife and the stone with clean water.