Hammer Voicing Advice

I'm a bit ignorant, what differences would there be between one type and the other?

I believe it affects the sound quality; for example, with a hammer that is too hard, the sound can result in being too dry and loud or even metallic; with a soft hammer, the sound results in being softer and less intense in volume.

Let's say that less pressed hammers result in a weaker "forte". More pressed hammers allow for a greater dynamic range between ff and pp. The fact is that one must know how to voice them very well. Voicing is still a very obscure art, and some tuners, rather than risking ruining a hammer rail, do not practice it or practice it superficially. Then it depends on the sound that the manufacturer intended. The voicing of more or less pressed hammers must take into account the acoustics of the listening environment to which the instrument is destined. Warning: it is an intervention that can yield irreversible results and therefore must be practiced with competence.

I know it is a very difficult art, but I wanted to know which pressing technicians are usually ordered; which one do you recommend and, above all, which one requires minimal intervention.

Thank you

This cannot be determined from a distance. One must hear the instrument and understand your needs. Also understand what your approach to the instrument is, what you expect from it, and what it can give you. Then one can evaluate how to request the pressing (also considering the characteristics of old hammers). One can start from a very pressed hammer action or not. The state of the strings and the tonal balance of the instrument between lows and highs must also be considered. In short, various factors must be taken into consideration. The technician must also know how to manage the correct tuning over time, correcting it during subsequent tunings. An incorrect choice of hardness, shape, or weight, as well as errors in drilling, inclinations, and its striking point, can change the characteristics of the instrument for the worse.