Analysis: Can 3D printing really go to practical applications?

3D printing (3DP) is a kind of rapid prototyping technology. It is a technique for constructing objects by layer-by-layer printing based on digital model files and using adhesive materials such as powder metal or plastic.

3D printing technology has long been a new product, but it seems to be more and more popular at the moment. On January 23, 2014, Professor Behrokh Khoshnevis of the University of Southern California designed a giant 3D printing device that could build a 2,500-square-foot house in 20 hours. The entire process of building a house is also designed by computer, and computer control ultimately has a huge robotic arm responsible for construction. The wall made by “Contour Crafting” is much stronger than traditional craftsmanship. According to the test, the strength of the house built by "Contour Crafting" is 10,000 PSI (PSI, pounds per square inch), while the strength of the traditional house wall mechanism is only 3000 PSI. Because this equipment is very fast to build a house, in the natural disaster relief, if "Contour Crafting" can be put into use, it can be built in a short time for the affected people to use.

Coincidentally, there is another news recently that 3D printers can make clothes! But the 3D printed clothes, the amount, I may not wear, they are really too advanced.

like this:

Or like this:

No matter how dazzling they are on the clothes, express their emotions? Can self-defense? Can test the sex age of the wearer, fit the wearer, but for me it always has some eggs. . . I want clothes, it needs to be breathable, to absorb sweat, to be comfortable to store, thin, not to be so strange with plastic fabrics...

Of course, this 3D printing clothing revolution will not come soon. You only see the model wearing it magically, but you don't know how expensive it is. It takes about 24 hours to print an A4 size plastic fabric. In general, a skirt like this may take up to 400 hours to print.

After reading these two examples, let me tell you what the current 3D printing technology is.

status quo:

1. Based on the finiteness of the material, it is still difficult to print the physical object, which is generally used for modeling and testing the feasibility of the model.

The picture above is a 3D printer made of plastic. In the plastic tube pointed by the arrow above, there is a liquefied plastic material. When the computer presets the model to be printed, the printer stacks the plastics in a stacked manner. The shape of the mold. Then you can assemble the good parts and build them into models.

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