First of all, we must know the cause of cracking before we can find the corresponding method. The cracking of walnuts in Wan Wen is nothing more than the following situations. The first is that the walnut accidentally fell to the ground and cracked, the second is that the walnut in Wan Wen was too dry and cracked, the third is that the walnut in Wan Wen itself cracked, and the last is that the walnut in Wan Wen germinated and cracked. Let's talk about the first one first. Walnut dropping and cracking is the most common thing in Wan Wen, especially for beginners. A novice who doesn't practice his hands is like playing basketball in a pot and kissing the floor tiles a few times before playing walnuts. It doesn't matter if you kiss a floor tile. What you fear most is the pro-cement floor. Kissing a floor tile will have a gap, and it will be a big deal to smooth it and continue the plate. Pro-cement floor will be in trouble, even if it falls into a pockmarked face and a crack, it will be angry with me. However, cracks are not irreversible. Generally, I recommend using glue to repair the cracks that have fallen out. Be careful not to use glue that sticks to plastic, such as 502. This glue is very corrosive, and it will cause secondary scars on the split wounds of walnuts, so it is strongly not recommended (I really hate this 502 when I grew up playing with four-wheel drive).
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It is suggested to repair with glue with the following characteristics: liquid glue, which will not leave obvious colloid after drying, has relatively low corrosiveness and good transparency. Finally, the higher the adhesive strength, the better. Then, besides the glue, prepare a syringe with a needle. The next step is to inject glue into the crack, but remember that the height of glue should not exceed the crack surface of Wan Wen walnut. The purpose of this is to prevent the residual colloid around the crack from affecting the appearance. However, glue remedy is also a last resort, because generally cracked walnuts do not crack in only one place, and most of them have internal or external cracks. And there will still be some traces of glue in the later stage. Therefore, in order to prevent walnuts from cracking as much as possible, it is better to be careful.
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In the second case, Wan Wen walnut is cracked due to the great difference of internal and external humidity or temperature. In fact, temperature and humidity are essentially moisture changes in walnut cortex. Exposed skin loses too much water because water is too fast, while inner stone loses too slowly or retains too much water. The outer pit shrinks due to water loss, and the original shape of the pit remains unchanged due to sufficient water, which eventually leads to the bursting of the outer pit (the inner and outer pits are a whole, and the distinction between the inner and outer pits is only for convenience of expression). In this case, there are usually many hidden cracks, and walnut oil is recommended here to remedy them. First, prepare an edible walnut and a hammer that can smash the sky and the ground. Simply put, prepare a hammer. Then break open the edible walnuts and take them out. I recommend you to use raw walnuts here (the walnuts bought in our dried fruit shop are generally cooked walnuts, but the oil quality of raw walnuts and cooked walnuts is very different). Take out the raw walnuts, put them into plastic food bags and beat them into walnut foam with a hammer. Put the broken Wan Wen walnut into it, evenly spread walnut foam on the surface of Wan Wen walnut, and then seal (seal the mouth of food plastic bag). Then put it in the shade for a day. Now it's okay to put it in winter for two or three days, but it's enough to put it in summer for one day. If it's left for a long time, it will get moldy.
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Compared with glue, the remediation method of raw walnut oil has many advantages. First, there will be no obvious cracks in Wan Wen walnut after remediation, and second, it is closer to nature and will not affect the cortex of Wan Wen walnut. It won't reduce the oil absorption capacity in the later period, and I heard (really only heard, I haven't tried it myself) that the Wan Wen walnut after glue treatment will have obvious dark areas (opaque places after glue treatment) after melting. Therefore, it is the safest and most effective method to remedy with raw walnut oil, but this method can not remedy cracks, but only has obvious effects on small cracks. Wan Wen walnut board can heal itself a little after it reaches the back, but it is not as obvious as King Kong, and a hole as big as a bowl can heal itself.
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Finally, this Wan Wen walnut itself is cracked, but it is not obvious when it is bought back. It took some time to re-offer, and there are many factors that caused this crack. It may be a fall, it may be dry, it may be overcooked, or it may be soaked in water for too long. It's hard to say a reason. In this case, I recommend egg white therapy. Prepare an egg white, a soft cotton towel (cotton paper towel for the baby, napkin if not) and a syringe. Inject the egg white into the crack with a syringe, and the liquid level of the egg white should not be higher than the level of the crack (leave a side of about one millimeter). Then dip a little water around the cracks (if there are many cracks, dip a little water on the whole walnut), wrap it in a cotton towel and dry it in the shade for a day. This method is not weaker than glue but larger than raw walnut oil, leaving no obvious traces. It is a more pertinent method, but the above three methods are only suitable for repairing the abdominal fissure of Wan Wen walnut. For Wan Wen walnut tip, walnut edge, walnut navel, the repair effect is not great, if these three places are cracked, it is best to give up. Because these three parts are the most critical parts of Wan Wen walnut, even if they are forcibly repaired, they will still crack in a short time.
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The last one sprouted and broke the Wan Wen walnut. The best way is to find a place with good feng shui for planting. After four or five years, you can play with the freshest walnuts every year, which are original and innocent!
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