Sharpening stone 400/1000 25 cm, KAI

Product detailed description

The KAI AP-0305 sharpening stone is one of those products that look unassuming, but very quickly reveal who at home really takes knives seriously. An average person sees a flat sharpening tool. An enthusiast sees another opportunity to spend half an hour in complete concentration and then force paper on everyone in the household for a demonstration cut.

Main advantages:

• The KAI AP-0305 is a combination water sharpening stone with #400 and #1000 grit, which combines coarser restoration of a worn edge with subsequent finer sharpening in a single tool.
• The coarse #400 side is designed for the first stage of sharpening, when you need to recreate the cutting edge, repair a significantly dulled blade, or remove minor damage.
• The #1000 side follows with medium-fine sharpening, during which the coarsely restored cutting edge is smoothed and prepared for regular use or potential further finishing on a finer stone.
• The combination of #400 and #1000 is also suitable as a first sharpening stone for those who want to master the basic maintenance of kitchen knives without purchasing two separate stones.
• KAI divides the classic sharpening process from a coarser stone through medium-fine to finishing, with the AP-0305 covering the first two stages of this process.
• Before use, the stone is soaked in water until air bubbles stop rising from it, and during the sharpening itself, it is necessary to keep its surface constantly wet.
• During sharpening, the knife is guided back and forth along the entire length of the stone with uniform light pressure, so that the edge is worked continuously along its entire length.
• For double-bevel knives, the blade is held at an angle of approximately 15° to the sharpening surface, and it is important to maintain this angle as consistently as possible during individual strokes.
• During work, the cutting edge is oriented at an angle of approximately 45 to 60° to the longitudinal axis of the stone, which allows for efficient use of the working surface during individual strokes.
• The AP-0305 can also be used for single-bevel Japanese knives, where, however, the method of positioning and sharpening the blade differs from standard symmetrically sharpened knives.
• The stone is housed in a large black base, which raises it above the worktop during work and provides more stable conditions for controlled guidance of the knife.
• The bottom part of the base is equipped with synthetic rubber elements that reduce slipping on the work surface and help keep the stone in place during sharpening.
• A catch tray with a groove for water and sharpening residue is designed around the sharpening stone, so the liquid generated during work does not end up directly on the kitchen worktop.
• After sharpening, you can leave the stone in the holder, where excess water can drain from it and subsequently dry before further storage.
• The AP-0305 is particularly suitable for knives whose edges already require more significant attention - the coarse side restores its basic geometry and the #1000 follows with finer sharpening without changing the stone.
• KAI does not treat blades as just another item in a catalogue - for more than a hundred years it has been developing know-how around cutting edges and, alongside the knives themselves, offers specialised equipment for their sharpening and long-term maintenance.

Additional information:

• dimensions: 25.2 x 9.4 x 5 cm
• material: ceramic-bonded abrasive
• with long-term use, the sharpening surface gradually wears down and may lose its flatness; a flattening stone is designed to level it, restoring the flat working surface needed for precise sharpening