Most bowed and stringed instruments have piano skins, and the materials are mostly mahogany and other hard woods. Such instruments have a certain relationship with humidity.

The wood of hard wood has a certain rigidity, high density, and fine wood. In a wet and dry environment with air conditioning and heating, the internal and external stress of the wood will not be balanced. At this time, surface burning will occur, and it will disappear after the humidity is stable. You can also click on 502 and hit it with sandpaper. Some wax conditional polishing.

Regular use of the gourd hu will keep the skin elastic, which is also its vitality. If you exercise as often as we do, your body will be fine. The timbre of the instrument is constantly used and pulled out. In the case of normal use, it is also a kind of maintenance and maintenance for the musical instrument.

In daily use, there is no need to apply oil, Vaseline, etc. to the skin of the piano, and there is no need to seal the wax on the back of the skin. It is normal for the scales to lift up, and the rolled scales vibrate with the skin. And it can't be sticked with glue. The skin of the piano must maintain its breathability and naturalness, and it will naturally adapt to the environment of use. Therefore, the gourd hu does have its aura.

If it is sealed inside and outside the piano skin, it will affect the vibration of the piano skin. Do not re-treat the back of the piano skin after it is fixed, because scraping or polishing the back of the piano skin from the back of the barrel will cause uneven thickness of the piano skin, which will seriously break the piano skin, so I recommend that you do not try. To change the timbre, you should start with the strings, bridges, gold and tone pads (see the use and debugging of Hulu Hu), and you can debug repeatedly if you know their functions and principles, and adjust the timbre that you are satisfied with.

When the gourd is not in use, put some anti-moth tablets, put some desiccant in the area with high humidity, and often take out the gourd to let it breathe.