It can be said that copper molding products are the product of a collective. No good craftsman at all stages can not have beautiful products. The first requirement of workers is persistence, careful, meticulous and experience on each stage. For hundreds of years when other industries have changed dramatically because of the development of science and technology, the traditional copper casting is still in its infancy, almost handcrafted. There are four main steps to completing a product.
I. THE PROCESS OF FORMING A COPPER PRODUCT
1) Create a template
Newly crafted bronze products are made by diving
Nowadays, copper samples are scanned in 3d to produce beautiful and sharp sample quality
2) Molding
Stage molding
- Use the soil + paper + wind to make the mold (open mold or also known as two-half mold)
- Then use the soil mud + chilli + heat-resistant pulp as the core (called doing sports)
- Firing the mold at 700 degrees Celsius, then cooling to adjust the thin thickness of the copper, to meet the technical requirements.
- Correction, smoothing, painting heat resistant paint again 1 time again at a temperature of 500 degrees C, molded into a block
3) Material flow
Copper at 1200 degrees Celsius, when the copper reaches the tin + lead + zinc ratio as required, adjusting the temperature to 1250 degrees Celsius, liquid copper meets the requirements and then pouring into the mold.
* Note
- When metal is added to each finished product, artisans must have experience mixing metal mixtures together
- For example:
+ For busts: 92% + Tin 5% + Lead 3%
+ For outdoor statues: 85% + Tin 9% + Lead 3% + Zinc 2% + Ni Ken 1%
- Depending on the finished product artisans mixed different
4) Fill the mold
Cook and pour the alloy into the mold
- Before casting copper and molten alloys into the mold must heat the mold evenly, enough heat for the copper flowing in the mold. This is the hardest part of the experience of the eyes and the judgment of experienced artisans
5) Complete the product
Complete the product
- After the mold is cooled, the molds are removed for grinding, filing, chiseling, cutting, the sample and the artist's eyes must be congruent - the new gas meets the technical requirements, art.
The most difficult is the type: the product has small detail components, the Buddha portrait , who must be god; bells, clearing up right, clear.
- The product is molded after the standard of shape, size, texture must be cooled. To do this step need to have their own tools such as trees
drill, file, knife ... The most important step is the station, with a lot of specialized tools, artisans stations can create the lines as it is the "station", "stations
"floating station" (Positive Station).
- The mosaic industry is also a special job in the town of saddles. The essence of this stage is to put on the surface of the product precious metals such as gold, silver to create value and high art.
Art for the product. Artisans must first chisel the surface of the product to form a negative image for the design, which fits into the acoustic mass produced by the needles.
Another type, followed by inlaid and polished surface.
- Adding gas, when adding another metal to a copper product called a gas mismatch, two other metals called tamarine.
- This is also a stage that is considered the traditional formula of each artist. As a result, different colors are created for each product, including products
Ancient artifacts have color rusty as it has been for thousands of years. And especially the color is kept intact for hundreds of years later
(Perform 3d scans of copper samples at Gactech)