 His revolutionary concept of an inner tension mechanism allows the musician to modify the camber of the bow at will and change its playing qualities even on stage.This was noted as one of the main innovative steps in the history of bow making.Within a few years, with the support of noted soloists (Yehudi Menuhin, Jaime Laredo, Ivry Gitlis, J.-P. Wallez, Heinrich Schiff, Christian Tetzlaff) his company attained international acclaim.