Ceramic Cup Process

1. Refining mud: Porcelain stones are taken from the mining area, finely ground with a water hammer, washed to remove impurities, and precipitated to form brick shaped mud blocks. Then mix the mud with water, remove the residue, rub it with your hands or step on it with your feet, squeeze out the air in the mud, and make the moisture in the mud even.
2. Casting: Throw the mud ball into the center of the wheel of the windlass, and use the bending and stretching techniques to draw the rough shape of the casting body.
3. Printing blank: The outer shape of the printing mold is rotated according to the arc inside the blank, and the dried blank is placed on the mold seed, evenly patted on the outer wall of the blank, and then demolded.
4. Littering: placing the billet on the sharp bucket of the windlass, rotating the disc, and turning it with a knife to make the thickness of the billet appropriate and the surface smooth. This is a highly technical process.
5. Sun drying: Place the processed blanks on a wooden frame for drying.
6. Carving: Using bamboo, bone, or iron cutting tools to carve patterns on dried or semi dried bodies.
7. Glazing: Ordinary round mouth uses dipping glaze (immerse the blank into the glaze basin, and immediately lift it out when the edge is flush with the glaze surface) or shaking glaze (inject glaze slurry into the blank and shake it to evenly glaze the top, bottom, left and right, and then quickly pour out excess glaze slurry), and chiseling tools (compared to "round tools", "round tools" refer to circular vessels formed by the drawing method, such as bowls, plates, plates, etc.). For vessels with more complex molding processes, such as bottles, zun, pots, jars, etc., they are called "zhuo qi" or large round vessels, they are blown with glaze (the method is to cover the bamboo tube with fine yarn, dip it in the glaze, and then blow it with the mouth. Repeat this process multiple times to obtain a uniform thickness of glaze layer on the surface).
8. Kiln burning: The time process is about one day and night, and the temperature is around 1300 ℃. First, build the kiln door, ignite the kiln, and use pine wood as fuel. Provide technical guidance on piling, measure the fire temperature, grasp the temperature changes in the kiln, and determine the ceasefire time.
9. Colored glaze: Overglaze colors such as five colors and powder colors are used to depict patterns and fill colors on the surface of fired porcelain, and then fired in a red furnace at low temperature, with a temperature of about 700 ℃ to 800 ℃. In addition, before firing the kiln, paintings such as blue and white, underglaze red, etc. are painted on the body of the raw material, which are called underglaze red. Its characteristic is that the color never fades under high-temperature glaze.