The cristal Baschet is a musical instrument created during the 50's by Bernard and Franc ¸ois Baschet. It is composed of a large number of glass rods arranged in chromatic scale. Frictional interaction between wet fingers and glass rods triggers self-sustaining vibrations of the resonator, assembly of metal parts and glass rod, which are transmitted to acoustic radiators. The instrument can be equipped with auxiliary elements to modify its timbre. In particular, long thin metal rods, called whiskers, are commonly added. They act as sound enrichment elements by clearly highlighting some higher harmonics. As the manufacturing process of this instrument relies on empirical knowledge, the way whiskers should be tuned is not well known. This approach is of interest to the instrument maker, since it allows him to understand the dynamic behaviour of whiskers and their interaction with the rest of the instrument.