Authenticity Since 1923 Flowdrill is not just any Frictiondrill manufacturer, it is the original manufacturer of friction drills. The foundation for this revolutionary technique was laid in Southern France as early as 1923. Jan Claude de Valliere was the first to see the potential of using friction heat to drill holes in thin sheet metal. However, due to limitations in material and technology at the time, the development wasn't fully realized until nearly 60 years...