Franco Bui founded his manufacture of watches and industrial stones in 1964. At the same time he developped his own diamond ceramic based broaches and grinders for drilling, grinding and polishing and try constantly to improved their quality and productivity. In 2ooo Jean Monnat Diamond Abrasives took over the production of diamond abrasives tools. Our goal is to produce the broaches with the best quality and regularity and to deliver them as soon as possible. We are currently trying to developp new broaches with metallo-ceramic binders.