Technology Process

1. Storage and treatment of the wood materials
For wood instrument, dryness is very important, as well as the bow. We have owned a large storage warehouse to store the materials for 10 years¡¯ consumption. After purchasing the materials, the log is planed and placed in a high-temperature room for storing about 1 year to evaporate water the oil grease, and placed in a ventilated warehouse for 5 years for manufacturing. For Brazilwood, it shall be stored longer.

2. Preparation of bow frog
The bow frog is the main fitting which is hardest to prepare. The Burma ebony quality is fine, the color is pure and it is a good material for preparing the bow frog. The dried ebony is processed to a primary form of the bow frog, after complicated working procedures, including embedding, grinding, slotting, carving, polishing and etc., and the preparation is completed.

3. Forming of arc of the bow
Arc of the bow is formed after heating. First, we heat up the mold, and place blank of the arc rod into the mold, take it out 10 minutes later and the basic arc is formed. The more precise arc is formed in processing with fire for baking.

4. Preparation of the bow head
Key factors of the bow head is precise size and nice modeling. A good model makes us nice. Head of the blank bow head is rectangular. First, we process it into the primary form of the bow head, and ebony piece and cattle bone piece are stuck on the bow. After the glue is dry, a perfect bow head is grinded with a file and sharpen knife. At last, an echelon hole is formed at the surface of assembling the bow wool. (There are too many modeling, we also employ two types, one is PECCATE from France and the other is SARTROY).

5. Assembling of the bow frog
Key of assembling the bow frog is to make stabilization between the bow frog and arc rod and the adjustment screw can be adjusted flexibly. We open a slot on the end of the blank arc rod, which shall be on the same plane with the arc head; a deeper hole is punched, which is punched from the end of the arc rod.

6. Assembly of the bow wool
After assembling the bow frog, we start to assemble the bow wool. Key points of bow wool are flatness and firmness. Before assembling, the bow wool shall be inspected and bundled, and one end of the bow wool is assembled into the bow wool slot of the bow frog and sealed with a wooden sleeper. After combing with a comb, the other end is assembled into the bow wool slot of the bow frog and sealed with a wood sleeper.

7. Preparation of the bow rod
Preparation of the arc rod affects use of the bow. We make the bow rod into an octagonal shape. During manufacturing, continuous baking is required to make its straightness and arc. Besides, we measure its balance point and control weight of the bow to reach the optimum status. After the octagonal shape is completed, some of them need to be round rod, so we make it a hexadecanoic shape based on the octagonal shape to make it round. The whole process is the spirit project of the arc manufacturing.

8. Painting
Painting is to wear nice clothes for each bow. Before painting, three grindings are required. The first step is to grind with a piece of coarse grinding paper, the second step is to grind with a piece of medium grinding paper and the third step is to grind with a piece of fine grinding paper. After the bow rod is completed, place it into a sealed box with chemical mist to make it radiated from ultraviolet and shell-lac paint shall apply. After painting, it is polished with a piece of soft grinding paper. The whole process is complicated, but more important is that clear wood grain can be seen on the bow rod.

9. Finishing
After painting, metallic wire is wound on the bow rod and animal skins (such as sheep skin, lizard skin and etc.) are applied on it. After polishing parts of the bow and checking it, a practical and nice bow is formed.

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