For beginners of the violin, they may be puzzled as to why there is a problem of glue cracking on the violin, as if it is the result of poor workmanship and defective products. To understand the reason for opening the glue, first of all, it is necessary to understand that the glue used to bond the violin body is something commonly known as animal glue (pig swim bladder glue or fish swim bladder glue).

Animal glue, as the name suggests, is a sticky natural substance composed of the gelatinous components on animals. The characteristic of animal glue is that it softens when exposed to high temperatures. Therefore, when a violin needs to be disassembled and repaired, simply blow the area bonded with animal glue with a hair dryer to remove the joint.

Therefore, when it comes to maintaining a violin, the most important thing to pay attention to is to avoid "high temperature" and "humidity", as both of these factors can easily cause the animal glue to soften and cause the area where the violin is bonded to fall off.

In general maintenance, the main thing is not to put the piano in the car. If the car is exposed to sunlight, the high temperature generated will have a significant impact on the viscosity of the animal glue. Also, remember to turn on dehumidification on rainy days. If you haven't practiced the piano for a long time, putting it in a moisture-proof box is the simplest way of maintenance.

But even if the humidity and temperature are well controlled, it can still cause glue cracking, and one of the most common reasons for this is on a new piano:

A new piano, after being played for a period of time, because wood is not a uniform substance, after being shaken, the wood will undergo some slight deformation. Therefore, when the wood begins to deform to a certain extent, the less viscous animal glue will fall off.

And when the panel falls off and is re glued, the joint of the wood will be more suitable for the vibration of the wood than its original position, so the sound of the violin will be better than before.

This situation will occur repeatedly, and as a result, the vibration of the wood will become smoother, leading to a better and better sound of the qin. A qin that can produce better and better sound must be built on a violin that is glued together using this method.

Some people have never experienced the problem of glue cracking when buying a piano, because modern technology naturally has glue that will not loosen at all after sticking, and is not greatly affected by weather or temperature. Therefore, the future development of sound for such pianos will be greatly limited, and mechanical pianos are usually made in this way.

Therefore, higher priced violins are actually more spoiled and difficult to maintain. Some beginners may feel that expensive violins are more prone to breakage, which actually misunderstands the characteristics of the violin itself.

Due to the sensitivity of the wood used in violins to climate change, it will expand when exposed to moisture (water absorption) and heat (thermal expansion and contraction). This is why we often advise against placing violins in high temperature and high humidity environments.