In 1964 a US market survey showed that 80% of Americans didn’t know how to sharpen a knife. This inspired Dennis Jackson, a design engineer for Wiltshire Cutlery in Melbourne, who saw an opportunity to create a knife that sharpens itself. In an instant he had identified a whole new range of products with an advantage over any blade ever sold before.
He invented a spring loaded sharpening block inside a sheath or scabbard, which sharpened the knife every time it was taken out or replaced. A nu...
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