Sheng Yuan Piano Tuning Tool Wool Felt Stop Block Wool Felt (Four-Piece Set) Stop Tool

Tuning tool mute block. For upright piano and grand piano

Size: Large length 13cm * width 3cm* thickness 1.5cm
        Medium size 9.5cm*3cm*1.5cm
        Small (1) 10.5cm*2.0cm*1.5cm
        Small (2) 10.5cm*1.5cm*1.5cm

Woolen felt is generally used in the winding area of upright and triangular pianos. The sound stopper made of woolen cloth is soft and will not cause harmful wear and tear to piano components. Piano strings are made of soft copper wire, which is easily damaged by hard things. Therefore, it is necessary to use a tone stopping tool in tuning. In addition, the use of a stopper on a horizontal piano will directly contact the sound board. In order to protect the sound board, a slightly softer stopper is used. Generally speaking, the bass-frequency is low, the amplitude is large, and the narrower wedge is easy to be dropped by the string vibration. In this way, a wider wedge is needed to increase the adhesion of the wedge to the string and obtain a better stopping effect.

Piano tuning is the process of adjusting each note and string by string. Most of the piano notes are composed of the same string group, that is, one note is composed of two or three strings. When tuning, the strings that are not being tuned need to be stopped to prevent them from making unnecessary sounds, so as not to interfere with the sound of the adjusted strings and affect the tuning hearing.