The friction between the bow hair and the strings of the erhu makes the strings vibrate regularly, bringing the sound of the erhu. If the bow hair slips, it means that the friction has been weakened or even disappeared. How can the strings vibrate effectively and produce wonderful sounds? ?

Today, I would like to introduce to everyone that under normal circumstances, if you pull the erhu bow every day, the erhu bow can be replaced in three months. Even if the amateur does not practice much, it should be replaced in half a year. An erhu bow can be used for a year, why? It is very rarely pulled, or the bow hair is already bald and still struggling.

If the aging degree of erhu bow chords cannot be correctly identified, the sound quality of the erhu will often be affected when playing, so everyone must pay attention to this, because the musical instrument pursues the sound quality.

How to identify the aging degree of erhu bow? Everyone pinch a new erhu bow with thumb and forefinger and pull it back and forth several times on the erhu, and you will clearly feel that there are many "thorns" on the bow hair. The powder adheres easily to the bow hairs. After the bow has been used for a long time, these "small thorns" will gradually become smooth without being worn out, and will not be able to hang the rosin. So how to identify it?

The longer the erhu bow is used, the more serious the aging will be. The "small thorns" are getting shallower and shallower, and some are even gone. This naturally leads to the rosin that cannot be applied. It is easy to slip when pulled, and the sound quality is natural. There are many people who mistakenly think that the bow has been used for many years, but there are still a lot of bow hairs and do not need to be replaced. This is very wrong. If you really don’t feel it, you can use this method to check. Erhu bows are calculated by practicing erhu for two hours a day. Generally, they can be replaced with new bows in three months to pursue better sound quality. Of course, it does not mean that they must be replaced. It can also be delayed for a month or two and then replaced.