The bow can make the violin "live". Twisting the bow too tightly is no different from a broomstick. It becomes stiff and slow to respond, producing a hard and thin tone; too loosely twisted will produce a soft and not squeaky tone, and it will also affect the player. The request was delayed. Adjust the bow to the proper tension so that it can respond to the slightest weight and movement. Nothing is allowed to interfere with its natural bomb.
When kinglos produces a bow, it pays attention to the following factors:
1. Weight. Each bow weighs exactly 61 grams. The most suitable playing weight.
2. The shape and elasticity of the bow. The arc of the bow is accurate, and when the bow hair is just tightened, it just touches the lowest point of the bow. When the bow hairs continue to be tightened, the bow rod on the bow head part, the overall curvature of the bow rod is in the same direction, and there is no upward protrusion.
3. Center of gravity. It is located 9 inches from the back of the yuba.
4. Yugen wood. Also known as Maweiku, it is made of ebony wood. Equipped with silver inlay and abalone shell inserts. The "Paris decoration circle" is generally added on both sides. That is, the mother-of-pearl disc is in the center, and a circle is added to the outside.
Bring your accustomed bow and piano as a benchmark for choosing a new bow.
When multiple piano bows are neatly displayed in front of you, first compare the length of the bow and select the longer bow.
Examine the material of the bow body, the wood fibers must be straight from the tail to the bow head like bamboo fibers.
Choose the one with a tighter annual ring density.
Tighten the bow hair (rotate the rotor of the bow tail) so that the distance between the bow hair of all the bows and the bow body is the same.
Put the central part of the bow in contact with the string and apply pressure. A good bow can withstand greater pressure and at the same time make a louder sound, which means that the bow has sufficient tension.
Check the felt weight of the bow. The felt weight of the bow is not its actual weight. Put the bow on an accurate scale, and the value obtained is the actual weight of the bow. This is different from "feel weight". Selected articles in another chapter), choose the one who feels lighter.
Try simple repertoire. Don't use complicated skills in bowing. The nature of simple bowing is easier to show.
The next step is to cool down the things in your mind, recall the sound, elasticity, weight, and feel just now, leave the scene to calm down and decide whether you want to buy it.
The violin bow shaft needs to be made of solid and flexible wood, and it can also be made of metal or fiberglass. Although the metal bow rod is durable, it lacks expressive power in use and has been eliminated. The market is studying the fiberglass-reinforced plastic bow rods for experiments, which are suitable in weight and strong in elasticity, and have a bright future.
The wood suitable for making bow rods are:
Su wood is produced in the western part of Guangxi, southern Guizhou and the Honghe River Basin in Yunnan. The bark is brown, the leaves are similar to Ronghua trees, and its fruit is similar to lentils. The tree body is generally not large. Viewed from the cross section of the wood, the outer sapwood has a layer of white fat, and the middle is mostly hollow. The wood texture is fine, but the weight is different. The hard wood is heavy and dark in color, mostly light red; the soft wood is light in weight and light in color, mostly dark yellow or apricot yellow. The crumbs are smelly and appear purple when placed in water. It is not only a good material for making piano bows, but also can make crimson dye, use it as a medicinal material, and has the function of relaxing muscles and promoting blood circulation.
Su wood is the most ideal material for making bow rods for performance. It is light, tough, flexible, and not easily deformed once it is made. When making, you should choose wood with dense and straight grain and heavy weight. The wood can be immersed in water for a test, preferably submerged in water. Any wood grain twisted or cracked or scarred is not applicable and must be selected carefully.
fire fruit wood are produced in the mountainous areas adjacent to Vietnam in Guangxi and Yunnan provinces of my country. The tree body is not large. Viewed from the cross section of the wood, the outer sapwood is pale in color, the middle heartwood is gray in color, the wood grain is fine and straight, and the quality is heavy. It is also a good material for making bows.
Mahogany-the wood grain is fine, the texture is hard, and the amount is heavier. It is better to use the old mahogany with red color, reddish brown or cyan.
The colored wood is the wood that is inferior to the production of bows. The made bows are less elastic and easy to bend left and right. Generally, they are only suitable for practice.