This is because the mold has an outer ring, and pressure can be applied inside, which helps avoid defects such as cracked rims, uneven bottoms, and split bodies. The opening of the mold must be reasonable and suited to normal production methods, facilitating each step of the manufacturing process. Otherwise, it will be counterproductive. For example, the current "coffee pot" body is molded together with the spout in one piece, which is not conducive to production and affects quality. The disadvantages are as follows: First, the rim is not firm; second, beating the body cylinder is quite time-consuming—the opening must be made small, then expanded during molding, and slip must be added inside. (If this effort were used to beat and attach a separate spout piece, it would be both cleaner and more effective.) Third, after such a body cylinder is formed, it is very difficult to apply the rib evenly and roundly, and with only one clay coil as a reinforcing ring, after firing, due to the inconsistent hardness and uneven thickness of the slip and clay coils, defects easily occur and deformation results. Creative work must consider materials and production. Our design is not design for design's sake. When a new product is developed, we hope it can survive and go into production, and that production will be convenient. If the mold design does not consider how the mold opens—in short, if economic efficiency is not considered—and if the creative result is detrimental to production, then it is not successful creative work.