The closed structure and feel are completely different from the current mainstream Rubik's cube. Starting from the closed structure, the third-order Rubik's Cube really has a design that aims at rapid torsion.
The earliest Rubik's cube in the world should be a closed structure, and there have been Rubik's cubes with closed structures before. However, in order to meet the needs of rapid torsion, the old closed structure only has the shape, and only the new closed structure fully embodies the advantages of the closed structure. A closed structure is not just a simple appearance, it makes your mind more balanced.
What are the characteristics of the new closed structure? First of all, we should make clear the difference between the traditional Rubik's cube and the new closed structure, and why we should design the closed Rubik's cube. Disassemble the Rubik's cube with traditional structure. If the quality is good, the corner block may be partially closed, but almost all corner blocks have a vacancy inside, which is caused by the design and manufacturing process. This is not easy to detect from the outside, so it needs to be taken apart. This design first makes the friction of each surface uneven, and more importantly, the size of the fillet under the block is directly affected by the thickness of the material. For example, a sidewall with a thickness of 1 mm cannot have a 2 mm fillet. It is easy to see that the inverse fault tolerance of the Rubik's cube is largely determined by the fillet size of some parts. The most direct example is that cars with big wheels have stronger passing capacity. Therefore, in order to have better reverse fault tolerance, the advanced Rubik's cube with traditional structure needs larger rounded corners. If large rounded corners are needed, the thickness of the cube must be increased! What happens when the thickness increases? With the same material, increasing the thickness will increase the quality (weight) of the Rubik's cube. In 2006, most players in China thought that the heavier the Rubik's cube, the better its quality and the faster its speed. But at present, the cutting-edge design idea of quickly reversing the Rubik's cube is to reduce the quality of the Rubik's cube as much as possible. Why? Because no matter cars, bicycles or anything else, things that are committed to speed generally have lightweight designs! Under the same stress conditions, things with light mass will have greater acceleration and be easier to control. On the Rubik's cube, it shows that in order to obtain the best maneuverability, in addition to perfect design and adjustment, it is necessary to reduce the weight of the Rubik's cube. More strictly speaking, it doesn't matter if the cross shaft, screw, spring and gasket in the Rubik's Cube are heavier, and the weight of the middle block should not be too big, but in order to achieve better results, the weight of the corner block and the side block must be reduced, and the lightweight of the corner block is more important than the side block!
The Rubik's cube with closed structure can first reach super-large rounded corners, and the size of the rounded corners is almost unaffected by the thickness! It can greatly reduce the weight of the Rubik's cube and ensure sufficient strength! Moreover, the balanced support of the closed structure makes it not easy to deform, and it is not easy to be affected by the parting line in the most sensitive parts. Is that too light? Compared with the traditional structure, the weight of the closed structure is reduced by about one third. If you think it's too light for your liking, you can also install a counterweight in the Rubik's cube, and no one knows!
Here's the theory. What does a closable structure actually look like?
There are only about 300 closed generations in the world. Personally, I think the closed generation has reached a new height in simple feel. Let players feel that the original lightweight Rubik's cube can also be so beautiful. It is characterized by its lightness, dexterity and super fault tolerance. Whether it is forward fault tolerance or reverse fault tolerance, it is quite good. But the most serious problem is the bad appearance, uneven feeling and the need to stick together. Closed a can. Due to these shortcomings, the closed generation regretted that there was no formal product, which became out of print and circulated among China players.
The closed second generation is an improvement of the closed first generation, with several exciting innovations. In design, the biggest feature is that the corner block adopts a lighter design, and the corner block retains the soul of the closed structure rather than the shape. The closed second generation introduced the anti-pop design for the first time! There are small bumps with unique design under the edge block and the small cover of the edge block, which obviously gives the Rubik's cube an extra layer of protection with the tracks under the side of the edge block and the middle block. Is this design redundant? Now, I think it's really redundant! Because bursting is usually caused by protrusions, it is very convenient to obtain a closed second-generation assembly by first removing the protrusions with nail clippers. Going to that small bump to turn off the second generation is extremely difficult to cause pop phenomenon, even more difficult to cause pop than country A, and almost the pop phenomenon has been eliminated! The closed second generation design has two obvious advantages. First of all, all the outer covers are unified, and the inner buckle design does not need to be glued. As a standard, there will be two large covers, and it will not be sad to lose one or even two covers. Another very good place is that there is a small opening at the top of the middle block where the cover is covered, which is especially convenient for you to disassemble and adjust the elasticity and distance. These design details illustrate professionalism and humanity!
Up to now, the closed second generation has been published in two editions, the first edition is loose and the second edition is tight. Closed II is still being debugged and improved, so it is only the internal test of domestic players at present. It needs to be adjusted, and it will not be officially released until a group of authoritative players in China feel very satisfied. Its feel characteristics still make you feel the advantages of lightweight and large rounded corner design, and its appearance is good. Although I personally feel much better than the traditional Rubik's Cube, it can be seen from the internal test that it has not surpassed the closed generation, but some players prefer the closed second generation, and personal preferences are also very important.
The closed structure represents the most advanced design concept of the third-order fast twisting Rubik's cube in the world. Judging from the characteristics of two generations of products, this design concept is very successful. The closed structure specially designed for quick twist was created by China, and the development team applied for a patent for it. It has no other reference, just want to make the best-feeling fast-twisting Rubik's cube in the world. We expect the Rubik's Cube with closed structure to be officially launched as soon as possible. Now the domestic Rubik's Cube players are actually very happy, and now they can choose the third-order Rubik's Cube, which is probably the richest.