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Ceramic Clay Model Model A, Below Image

Tao Ni Model B, below image

Ceramic Clay Model Model C, Below Image

Tao Ni D model, below image

Tao Ni E Model, Below Image

Ceramic clay black pottery style, below image

Colorful Pottery A Pink Version

Colorful Pottery B, Blue Variant

The following introduction will help you gain a deep understanding of how stone and earth turn into exquisite ceramics:
1. Clay preparation
Ceramic stone is extracted from the mining area. First, it is crushed into pieces the size of an egg by manual hammering, and then ground into powder using a water mill for washing out impurities. After sedimentation, it is turned into brick-like clay blocks.
Then mix the clay lump with water again, remove any debris, rub it with both hands, or press it with feet to squeeze out the air and even out the moisture in the clay.

2. Rack casting
The clay ball is thrown onto the turntable of the windlass, and the movements of bending, stretching, retraction, and extension are used to shape the basic form of the mold. Mold casting is a process of forming the object. One must be familiar with the shrinkage rate of the clay material.

The overall shrinkage rate of Jingdezhen porcelain clay is approximately 18%–20%. This value may vary depending on the size and type of product, as well as the hardness of the clay material. Due to the flexibility of Jingdezhen porcelain clay, the formed bodies are thicker than those made using other clays.
When casting, not only must the shrinkage rate be taken into account, but the shape as well. For products of larger size, it is necessary to cast them in sections. From each section, one can assess the skill and level of the casting craftsman.
3. Printing blank sheet
The shape of the mold is created by spinning and shaping the inner contour of the blank. The partially dried blank is placed on the mold core, pressed evenly against the outer wall, and then removed from the mold.

4. Billet
The blank is placed on the bucket of the windlass, the wheel is turned, and it is ground with a tool to achieve an appropriate thickness and a smooth surface. This is a process requiring high technical expertise. “Blanking” or “grinding the blank” is a crucial step in determining the shape of the object, ensuring a smooth surface, consistent form, and uniformity. Internal and external blanking is an important molding technique in Jingdezhen porcelain manufacturing that surpasses other kiln systems, serving as a technical guarantee for maintaining the unique style of Jingdezhen ceramics.

The worker responsible for shaping the clay must not only be familiar with the properties of the clay material, but also have a thorough understanding of the curve changes during molding, the shrinkage ratios of various parts during firing, and the thickness of the remaining clay in each section. Generally, the thickness of the clay body varies across different parts of the same object, as the shrinkage rates and stress conditions differ in each area during high-temperature firing. Therefore, when shaping the clay, it is necessary to control the thickness of the clay body in each part to prevent deformation during firing. Controlling and identifying the thickness of the clay body during shaping is crucial for mastering the shaping technique and ensuring quality.
5. Baking the green body
The processed blank is placed on a wooden frame for drying.

6. Engraving
Patterns are carved onto the dried blank using tools made of bamboo, bone, or iron.

7. Glazing
Ordinary round vessels use glaze application or floating glaze. For carved vessels or large round vessels, blowing glaze is used. Most ceramic products must be glazed before being fired in the kiln. Although the glazing process appears simple, it is an important and challenging procedure to master. It is essential to ensure that the glaze layer on all parts of the body is uniform and of appropriate thickness, while also taking into account the different fluidity of various glazes—it is truly not an easy task.

Jingdezhen ceramic decoration can be roughly divided into two basic types: under-glaze decoration and over-glaze decoration. Under-glaze decoration refers to porcelain that undergoes artistic decoration on the clay body directly and is then glazed and fired. It gets its name because the decorative patterns are located beneath the glaze layer, and it mainly includes blue and white, underglaze red, and underglaze multi-color techniques.
The technique of decorative processing on the already fired porcelain glaze is called overglaze decoration, which includes ancient coloring, pastel coloring, ink coloring, modern coloring, etc. There is also "doucai" decoration, which combines underglaze blue and white with overglaze multicolored colors. In fact, since the Yuan Dynasty, the history of color painting decoration on Chinese porcelain has primarily been traced through the development of Jingdezhen porcelain. The red color from the underglaze is a prestigious variety with high reputation and influence in Jingdezhen.
8. Kiln firing
The ceramic products are placed in an urn, which is a container used for the firing of ceramics made of refractory materials. Its purpose is to allow the ceramic body to come into direct contact with the kiln heat without contamination, which is particularly beneficial for the production of white porcelain. The firing process takes about one day and night, with temperatures around 1300 degrees Celsius. First, the kiln door is built, then the fire is lit. The fuel used is pine wood. Skilled workers provide technical guidance, monitor the heat level, track changes in kiln temperature, and determine the time to stop firing.

9. Color Painting
On-glaze colors such as polychrome and pastel are created by depicting patterns and filling colors on the already fired porcelain glaze, followed by firing in a red furnace at a low temperature of approximately 700–800 degrees.
Before firing the kiln, painting is done on the clay body, such as blue and white or underglaze red, which is called underglaze coloring. Its characteristic is that the colors are applied under the glaze at high temperatures.

The painting on porcelain is different from ordinary painting. This is because the pigments used by the artists when applying glaze and painting on the ceramic body undergo significant changes after high-temperature firing and baking. It is remarkable to see half-finished pieces with dull colors and unimpressive appearances transform into dazzlingly vibrant colors through the firing process. At the same time, it reveals what kind of special experience and imagination are required to paint on porcelain.