Tao you asked, “how did you carve the jumping knife pattern on the purple pottery teacup?” I would like to expand it.
First of all, the jumping pattern is not engraved. It can be made quickly with the help of tools. There is a special tool for tool skipping. One end is fixed or held in hand, and the other end contacts the ceramic surface. The ceramic blank is placed on the drawing turntable. By controlling the turntable to rotate, the jumping blade will jump on the surface of the ceramic blank at a certain frequency to make a regular pattern of tool skipping.
The speed of the whole process is very fast, similar to the action of trimming, but the use of jumping blade.
After careful observation, no matter whether it is a small cup or a large tea pot, there are several circles of jumping knife pattern, but the thickness, spacing and pattern of each circle are different. The reason is that the manual control of the rotating speed of the turntable and the force of human hands acting on the jumping blade will affect the final texture effect.
In the rapid rotation of the turntable and the simultaneous movement of human hands, there may be a slight difference in the force. The frequency of the jumping blade on the surface of the ceramic body will be different, and each circle will naturally have different patterns.
There are also good and bad jumping knives. Good jumping knives should be cut and pulled in one breath. Otherwise, if one knife goes wrong, the back knife will go wrong.
We say that jumping knife is simple and fast, because it is not difficult to learn to jump, but this is not to say that jumping knife decoration can not be taken on the table. It is not difficult to learn, but it is not a day’s work to dance well and have artistic beauty. For example, Xu Chaoxing, a master of Chinese arts and crafts, made his way into the celadon world with his unique skills of jumping knives.
There is another phenomenon that I don’t know if you’ve noticed. Most of the jumping knife patterns only appear on round cups or cans without bonding other parts. Teapots with spouts and handles, square cups and jars are almost not decorated with jumping knife patterns.
The reason is also the method of making. Because the jumping pattern is a complete circle when the ceramic body is rotating at a high speed, that is to say, the metal strip should be able to jump around the ceramic body completely without any barrier.
However, the spout and handle of the pot obviously block the jump, while the square work does not have the conditions to jump the knife at all.