The process of making violin keys, how to repair violin keys?

The piano bridge is one of the important parts of the violin. The violin bridge transmits the vibrations of the strings, thereby affecting the timbre and volume. Next, let’s take a look at the process of making violin bridges, and how to trim violin bridges?

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The making process of violin keys

The wood used to make the bridge must be made of diameter-cut material. When dividing the diameter-cut wedge material, let the top of the bridge point toward the center of the trunk, that is, the sharper and thinner side of the wedge material. The feet of the yard face the outside of the trunk, that is, the thicker side of the wedge. The two sides of the bridge are facing the direction of tree trunk growth, that is, the upper and lower ends of the wedge-shaped material. When selecting or checking the quality of the bridge, in addition to the straight wood grain and hard material, you should also look at the back of the bridge, that is, whether the side facing the string board is an absolute cross-section. The shape of the pith bundle on this side should be longer. Bar shape. Because the marrow bundle grows transversely in the trunk, if it is not an absolute cut, it will cross the marrow bundle, and what you see on the cut surface will be its cross section, which will become a round or oval spot.
Since the bridge needs to be trimmed to a specified thickness and is thick at the foot and thin at the top, the trimming surface is on the front of the bridge, that is, the side of the bridge facing the fingerboard, so it is impossible to maintain the absolute diameter on this side. cut, so the facial medullary tracts become round or short spots. During production, it is also necessary to observe whether the annual rings are perpendicular to the radial section, because when sawing the log longitudinally, if the saw edge is slightly inclined and is not on the absolute radial section, the annual rings will not be perpendicular to the section. The growth rings seen on the side will also be slanted. If you make a small number of piano keys yourself, you must strive for excellence, and the various requirements mentioned above are not difficult to meet. However, when purchasing commercial piano keys, especially those produced in large quantities, not everyone may be able to meet such standards.

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How to trim violin keys?

The piano code of the purchased product cannot meet the requirements, so we usually need to repair it carefully. First, use a file to flatten the top surface of the code according to the arc shape of the template, then file the sharp edges on both sides of the top surface into very narrow bevels, and connect them smoothly with the top surface, but do not make the top surface narrower than 1.3 mm. Use a knife or file to smooth the front surface of the upper part of the bridge. When repairing, cut from bottom to top and gradually connect with the chamfered edge. The distance between each string from the bridge to the saddle must be equal, and finally smoothed with fine sandpaper. It is also necessary to adjust the inclination of the piano code appropriately according to the needs.
The bridge is the part that has the greatest impact on the sound quality besides the main body of the violin. It is the throat of the violin, and some people call it the heart of the violin. Under the premise that the overall structure of the violin and its quality level are basically finalized and cannot be easily changed, the significance of selecting the instrument and placing it in the best position should be appropriately emphasized and valued. The material, shape, height, thickness, polishing and placement of the bridge will all have a huge impact on the sound and quality of the piano.