The shape of the shaft is an essential element which, together with the lamination, contributes to giving itself most of its mechanical characteristics. Unlike what happens with wood, the taper is given to the shaft during construction phase and can no longer be modified. The research, development and prototyping phase is therefore important to define this feature which, unlike those mentioned above, is the most binding. The taper defines the center of gravity of the tip vibration, a decisive factor in managing the response to the stroke, deflection, and in the general balance of the shaft if properly combined with its mechanical characteristics.
Many factors must be taken into consideration, including the reference market, the specialty for which it was most thought of, the type of bridge that players prefer, the mechanical characteristics that you want to obtain. Also in this case, as with lamination, you often have to sacrifice something in favor of something else.
The right taper can make the difference between a performing shaft or a poor one.