Decryption of DZi Beads Drilling Processing

                 Decryption of DZi Beads Drilling Processing

For friends who love collecting ancient DZi beads, they must know the pore channel of bead is an important basis to judge whether a bead is new or old.

For the picture below, we can have a look at the tool of how the ancient people drilling

The way of drilling in the ancient times was greatly different from that of nowadays. Machine drilling is mainly served as the modern means to open pores. The pore channel is very perfect in line with lubricious drilling trace. Be careful, some fake businessmen open the pore manually. As a result, the pore channel is rough. Thus, whether the pore channel is in line is not the method to distinguish old beads.

 [Have you discovered why the pores will be in an intersecting shape?]

    As is shown in the picture, we can discover that there are two segments in one bean. The pore is not in line. The editor deduces that the ancient people didn’t open the pore at one go without interruption, but step by step. First, they drilled the pore from one end of the bean and stopped when it reached to the middle or certain depth. Then, they drilled the pore from another end with the same method until the channel was opened. We can easily imagine that the pore channel of ancient bead looks like V shape.

 [Drill the pore from both end of the bead until they meet each other. In the meantime, please pay attention to the drilling trace inside the channel, there is an irregular helical lines.]

It is, of course, good if both ends meet each other successfully in the middle in the first drilling. However, how to remedy if the intersection is too small? According to the editor’s long-term observation, the conclusion is that we need the third time drilling, which is to drill the original pore again. This time aims to get through the both ends. Thus, we may discover that the pore is in “ \ _ / ” shape.

 [Observe the cross section carefully. It is not difficult to find out the trace of failed drilling in the first time and successful drilling in the second time.]