Stay Sharp knife
The Wiltshire Stay Sharp Knife Made Keeping Knives Sharp Nothing To Worry About.

In 1969 Denis Jackson, an engineer at Wiltshire Knives, solved the problem of keeping kitchen knives sharp by designing a knife and scabbard with a sharpening block inside. When the Stay Sharp Knife is pulled out of the scabbard its blade is sharpened as it runs through the block. the Stay Sharp Knife is very popular. Millions have been sold in more than 30 countries.