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Belgian bench stones

The quarrying of Belgian whetstones in the Ardennes is first mentioned in a Roman document. But the story of these natural honing stones goes further back than that. The approx. 480 million-year-old grey yellow sedimentary stones, originating from volcanic ash, are composed of very fine garnet crystals. During sharpening these are released and in combination with the water and abrasion debris make a honing paste. The garnets only remove fine shavings from the metal and ensure a good material removal as well as a good polish. A worldwide unique combination of speed and grain size.

Interesting fact: To produce 1 kg of sharpening stones approx. 1500 kg of cliff must be removed. The thin yellow slices are glued to a slate base and cut to size. Grit 6000-8000.

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