..Regarding the Hammer Heads...

Catching is important. For this reason, the hammer tails are shaped according to the radius of rotation of the capstans. Further filing and/or lateral tapering is done to achieve a shape such that there is no interference with the neighboring hammer during the ascent. It should be noted that the hammers, when ascending, especially if highly inclined, travel in an arc and sometimes find themselves oblique, in their ascent, relative to their

Hello everyone!!! Could you please explain to me what "l'attrappaggio" is, or at least where I can find explanations regarding it?

Thank you very much

Lorenzo 😆

You have noticed that in both the upright and the grand, the hammer moves away from the string after playing. Well, when playing a "forte" stroke, the hammer needs a "brake," that is, something to stop it and prevent it from bouncing freely and undisciplinedly against the string to exhaust its energy. This is where the "PARAMARTEL" comes in, which the French call "ATTRAP". In the upright, the leather-covered tip "catches" on the paramartel (which is covered in hard green felt), and in the grand, the hammer tail "catches" on the paramartel located at the terminal part of the key, which is covered in leather. In the upright, the paramartel is flat or, at most, slightly arched. In the grand, there are two different, well-defined shapes: one flat and another shaped almost like an S. The choice of one or the other by manufacturers depends on the shaping of the hammer tails themselves and not just that.

pianoexpert wrote:

You have noticed that in both the upright and the grand, the hammer moves away from the string after playing. Well, when playing a "forte" stroke, the hammer needs a "brake," that is, something to block it and prevent it from bouncing freely and undisciplinedly against the string to exhaust its energy. This is where the "PARAMARTEL" comes in, which the French call "ATTRAP". In the upright piano, the leather-covered cap "catches" on the paramartel (which is covered in hard green felt), and in the grand piano, the hammer tail "catches" on the paramartel located at the terminal part of the key, which is covered in leather. In the upright, the paramartel is flat or, at most, slightly arched. In the grand piano, there are two different, well-defined shapes: one flat and another shaped almost like an S. The choice of one or the other by manufacturers depends not only on the shaping of the hammer tails themselves.

All clear!! Thank you to master PIANOEXPERT, truly kind.

Lorenzo