How to choose the bow thickness of erhu?

Material: Bows should be made of natural bamboo or precious materials. But no matter what material, the quality of the material is very important. High-quality material, when you gently pick it up, you can immediately feel its elasticity, toughness and a "heavy" feeling. Generally speaking, the quality of the bow rod depends on whether the material is uniform and whether the bow rod is round. Bow poles made of the same material are heavier in diameter and length. The following are common bamboo and wood.

Length: The standard erhu bow is 83cm long, and the diameter of the bow rod ranges from 0.65 to 0.70, 0.75 and 0.80cm If you are a beginner or play traditional music, you can choose a slightly larger diameter bow, which will be more stable when you back the bow. If you mainly play transplanted songs and concertos and often use techniques such as throwing and jumping bows, you can choose a lighter bow, which is more flexible and light to use.

Bending degree of grip: choose the appropriate bending degree of the piano at the bow grip. Proper bending of the bow bar at the bow handle can make the player's wrist more comfortable and natural, realize agility, dexterity and labor-saving in changing strings, and obtain the maximum volume and good sound quality with the minimum movement range. Generally speaking, the bending of the grip should not be too large.

Ponytail: Although the high-quality black and white ponytail made of nylon, inferior ponytail and rosin can make sound, the sound made by inferior ponytail is noisy and miscellaneous, while the sound made by high-quality white ponytail is sweet and moist. This is because the hair scales on the surface of high-quality white ponytail are even and sharp, which is beneficial to the friction of strings.