Lan Yu felt that Song Da's words were very reasonable, walked around the store, saw a building lamp on the shelf with glazed beads hanging, felt that such beauty was very distinctive, and remembered the flaw, so he asked Song Da.

Song Da said, "Whether there are glaze beads or not, it is normal, only if the glaze beads flow to the bottom of the pot, causing the bottom to stick, that is a flaw." Some people like it and think it's zen, while some people don't like it and feel asymmetrical, it all depends on their personal preferences. I think the glaze beads are unavoidable, at the critical point of about 1300 degrees of high-temperature glaze is not well controlled, it can also be said to be glaze tears, in fact, this is the tears of the potter, tears of joy, and some friends jokingly call this a big snot, breaking the tears for laughter. Just like a professional driver drifting, seeking a critical balance point of tire grip under the trend of car power and body inertia, the car will be destroyed and people will be killed if it is not rectified, which is an extremely costly technology. ”

After listening to Song Da's words, Lan Yu nodded silently, she remembered that her mother said that playing with Zhan is based on interest first, not forgetting the original intention, when Jianzhan can also become synonymous with "incomplete beauty", people will be worried about it, and will create a magical artistic miracle in the history of aesthetics. This is a higher kind of existence that is the most virtuous and the most beautiful.

Then, Song Da took Eucalyptus blue to visit Jianzhan Studio and introduced her to the production process: embryo mud preparation→ blank modeling→ drying and glazing→ high-temperature firing.

The preparation of embryo mud is to mix the main raw materials such as yellow mud, clay and laterite according to the requirements of making the cup, soak and stir into a slurry in the pool, filter it with a 100 to 200 mesh mesh and then soak, stir and filter, repeat it 4~5 times, make a paste mud, seal it and place it in the shade place to stalemate, so that the embryo mud can achieve a uniform structure, delicate, no visible impurities, the moisture is 26% ~ 28%, and the fineness is less than 0.5% of the 100 mesh sieve.

Then the blank modeling is carried out, which is the use of manual blank and semi-manual blank. Pull the mud into a blank with both hands, and you should put it in your chest and do it in one go. Flexible use, pushing, pulling, retracting, putting and other techniques to find the best form of the wall molding.

The drying and glazing refers to the embryo repair after the formed embryo body is dried to a certain extent, and the glaze is applied directly after the embryo is repaired.

The final step is high-temperature firing, which is fired in three ways: traditional wood kiln, electric kiln and gas kiln. The firing process controls the atmosphere in the kiln as an oxidation flame or a reduction flame, and is fired at a high temperature of 1200°C~1400°C.

Lan Eucalyptus can't help but sigh that the firing technique of building a kiln is really a very old traditional handicraft skill.

The tire of Jianzhan is the local tire soil of Jianyang with high iron content, and the firing of Jianzhan must be at a high temperature of more than 1200 degrees, and the tire soil cannot withstand high temperature, which is a contradictory problem. Therefore, it is a difficult problem to have problems such as distortion, loss of roundness, and cracking in the firing. The glaze will flow in the kiln at 1300 degrees, and the flow will produce the phenomenon of sticking to the bottom at the same time, which is also a relative problem.

Because the natural soil and mineral glaze of Jianzhan contain many uncertain elements, all impurities cannot be filtered out by manual washing by craftsmen, and many natural impurities are still retained in the molded tire or glaze. Due to the particularity of kiln firing, the yield of firing is randomly determined by the kiln fire, and the high-quality products are also randomly generated, which is uncontrollable by artificial. Take a look at the latest chapters of "Dream Claw Book House in the Great Era" and read it for free for the first time.