In the end, no matter the part that was chopped or cut off, because the volume is not small, it is not wasted, but as originally planned, it will be added back to the other places of the three jewels.

Just like that ring, the finger hole that was punched out by the punch knife removed nearly 30% of the diamond's volume, nearly 30 carats!

Just as jadeite and other materials are used to make bracelets or pen holders, the remaining parts in the middle will continue to be used. These removed parts of the diamond will also be used well, combined with precious metals, and all re-inlaid back to set off the theme:

One golden pearl and two black pearls.

The lens gives 3D modeling on the computer in real time. On the screen, the pearl in the center is held in the center by a structure like a bergamot.

The lower part of the bergamot-like structure is set on the diamond abutment setting of the all-diamond ring.

The next step is to print out the bergamot-like structure in the computer through 3D printing with photosensitive materials.

Then a group of students used a process similar to the lost wax method to cast the 3D printed bergamot-like structure out of platinum.

Another group of students is using laser cutting to cut the diamonds that were previously removed into different shapes.

It was not until they started to use a laser engraving machine to groove the pearls, and then set these diamonds with different contours in them, that the audience suddenly realized.

Well, the 13 mm diameter golden pearl in front of the lens was actually inlaid into a small earth with pearls and diamonds!

The ocean part is a bare pearl surface with golden luster;

And the miniature version of the land, because it is diamonds inlaid with platinum, it shines with silver-white brilliance!

"Wow..." Huang Yidan couldn't help sighing...

Traditional pearl jewellery is mostly directly inlaid on precious metals, directly showing the diameter and luster of the pearl itself. There are also some merchants who have carved on the pearl.

But I have never seen the operation of setting diamonds on pearls...

The shoe buckle here uses the shooting method of two story lines advancing in parallel.

The hollow design on the shoe buckle is first cut out by laser cutting.

Not only that, but also tried laser engraving on the four corners of a rhombus diamond to make the inside of the four corners look like a needle-like fractal structure of snowflakes.

Laser internal engraving of crystals is very common, but this is the first time someone has attempted such a large volume of diamond laser engraving...

Then, it is the problem of grinding the inner wall of the hollow part that was discussed earlier.

The masters and students of the union even thought of the multi-axis CNC ruby ​​grinding head used in high-precision polishing, but unfortunately it can't reach into the narrow hollow part.

It is not impossible to use people to polish the hollowed inner wall with a hand drill, but the accuracy is not enough. Zhai Dong has made it clear before that it will be produced by Seiko.

In the end, the teachers and students went to Jinling University of Technology, which developed high-pressure water jet cutting technology, and developed a device that uses high-pressure water jets for grinding instead of cutting.

Then they used a high-pressure water jet mixed with quartz sand and diamond powder to spray the hollow part of the diamond!

In fact, the difference between the two lies in precise control, because even if the grinding force is obviously not as good as cutting, if the high-pressure water jet is stopped in one place and kept spraying, the result will be the effect of water droplets.

So controlling the speed of the knife and the missing amount of polishing have become the key...

In this way, the injection pressure of the high-pressure water jet and the diameter of the quartz sand and diamond powder in the water are adjusted over and over again to achieve an effect similar to the upgrade of the grinding tool mesh. Finally, the hollow part is polished to the normal diamond polishing. Gloss!

The hollow structure is extremely transparent inside and outside!

Then, on both sides of the ring and shoe buckle, starting to combine casting and forging methods, using platinum, gold, purple gold, rose gold and other precious metals to make a base that surrounds the small planet, and jointly set the theme pearl small planet on the diamond base. on.

In addition, the small planet with pearls and diamonds, only the ring on the ring is inlaid with the appearance of the earth,

The other two diamonds are cut into thin slices by polishing multiple pieces of diamond leftovers, which look like a ring and are cut into several fan-shaped pieces, and then they are respectively inlaid on the black pearl in the center to form a Saturn halo. That kind of track!

When people see this wave of operations by the masters and students, they always feel that it is difficult for other jewelry companies to imitate...

This is what is said in the legend. Can you not imitate it if you take a picture of it from beginning to end?

It’s no wonder that apart from the pair of shoe buckles ordered by Zhai Dong, the all-diamond and golden pearl small earth ring used to show off skills was also bought anonymously as soon as it was put on the shelves...

The processing of gems such as diamonds is a product of the combination of technology and art.

This wave of fascinating skills for the jewelry design profession of the United Nations General Assembly, even if the value of diamonds and pearls is not considered, even if it is made of artificial pearls and glass slag, it is enough to integrate various existing and newly developed technologies into it. Support their valuable value!

After all, how much labor time is condensed in it?!

At the end of the video, the teacher wearing white gloves and several other industry experts who have been invited to look carefully at the jewelry mirror to look for possible flaws.

Finally, put it in a specially designed showcase.

In addition to the subtitles, the ending credits are some of the highlights of the previous filming.

For example, the little brother carrying the camera raided the jewelry design professional practical classroom with the lights on in the middle of the night.

Teachers and students also went to other universities to discuss issues with other experts in equipment R&D and manufacturing.

There is even the legal department's application for patents and copyrights for some new technologies and in-film soundtracks, which even makes people enjoy it...

It wasn't until this newly launched blockbuster was completely over and automatically exited the full screen that Huang Yidan turned his head and said to his parents around him:

"Dad, Mom, I want to report to the UN General Assembly next year!"

"Uh..." The two parents suddenly heard their girl say this and didn't know how to answer for a while.

After all, for ordinary people like them, college entrance examination is a very important choice in life...

After a daze, the family of three sitting in front of the computer first inquired the U.S. University’s scores over the years.

Three books, better than specialist...

"This..." Huang Yidan's parents were in trouble.

Although my girl’s studies are average, she is still at a second level.

Work hard and break out. I hope I can get a college, but now I want to go straight to the exam...

Huang Yidan said again:

"Dad, Mom, I think so,

The scores of the UN General Assembly will definitely rise in the future!It is expected to show up next year.

If you wait a few more years, you might not pass the exam!

And I happen to take the exam next year, which is equivalent to buying the rise when the rise just happened!"

To be continued...