When the computer reported to buy back the first 3D printer, the editors were very excited and looked forward to its first work. Under the guise of the evaluation room engineers, the 3D printer finally started working. The speed seems to be slower. After more than 2 hours, a three-dimensional ice cream model finally came out to print something, the key to see consumables
In the last issue, we introduced the principle of 3D printer. According to the principle of 3D printing, as long as the 3D printer uses the same material as the model, it can print almost the same thing as the model. For example, bread, you use flour to make materials, printed bread can be eaten, you can only use plastic, plaster and other materials to print only the bread model.
However, the consumables for 3D printing are not extensive. From the principle of 3D printing, the expansion of 3D consumables determines the capability boundary of 3D printers. At present, it is mainly made of plastic wire, wire, gypsum powder, etc. These materials, in terms of precision and application range, make the current 3D printer still stay in the manufacture of the model, and its greater value has not yet fully realized.
The computer has just purchased the 3D printer for testing. The consumable used is ABS plastic wire (one of the five major synthetic resins, which is the largest and most widely used polymer at present). It is non-toxic, tasteless, and inexpensive. It costs only 300 yuan per kilogram. The printer uses a "melt-forming" technique in which a thick plastic rope is used to melt the liquid in the nozzle and form a layer of deposited plastic fiber. Since the plastic wire is melted and then cooled, the model is made up of layers by layer, plus the principle of thermal expansion and contraction, so it is not very high in precision control. The printed 3D model is also rough.
In contrast, 3D printers that use powder particles as the printing medium (most commonly gypsum powder) print a much finer model. It works by spraying powder particles onto a mold tray to form a very thin layer of powder that is then cured by a liquid binder sprayed from the nozzle.
At present, the higher precision is the 3D printer using "laser sintering" casting technology. For example, in the Beijing Computing Center of Beijing Yongfeng Science and Technology Park, there is a Objet3D printer with a price of 1.6 million yuan, using photosensitive resin consumables, which is a special material that will harden immediately when exposed to ultraviolet light, and another supporting material. Also essential. Under the control of the computer's three-dimensional data image, the printer's six nozzles spray a liquid material layer by layer at a thickness of 16 microns. The part of the object uses photosensitive resin, and the rest is sprayed with filling material. After a UV exposure, the liquid material hardens. The use of materials is not only expensive, but the printing method is also very complicated.
At present, the consumables of 3D printers are not very rich, but they have printed a lot of things that are very surprising to you. From eating to using, to the medical heart, blood vessels and other organs... Wow, this is really amazing. It seems that it is not far from the character clone machine in the science fiction movie. Yes, many of these seemingly magical things, in fact, we can be at your fingertips. Below we will list a few examples that are closer to us.
Printed food, beautiful and delicious
Since the advent of 3D printers, many people have thought of eating the first. At present, some people have made such a 3D printer, which can directly print the food that can be eaten. The raw material for printing is sugar. The name of the printer below is called CandyFab4000 Sugar 3D Printer, which is produced by EvilMadScientistLaboratories. The CandyFab printer can now print images from 5ppi to 20ppi, but only for food content, because it works by jetting. Heated sugar. CandyFab is currently an open source project and is seeking volunteers to help the technology evolve.
Magical conversion of sand and sunlight
For 3D printers, consumables are key. The difference in price of different consumables is very large, ranging from a few hundred yuan to tens of thousands of kilograms. What consumables are the cheapest? The cheapest is sand and sunshine. Can sand and sunlight really make 3D printing consumables? can! A man named MarkusKayer invented a 3D printer that can print incredible pieces of sand and sunlight.
He integrated the two most abundant resources of sand and sunlight in the desert, using a device: solar-sintered "SolarSinter," a device that melts sand and then uses glass to make 3D objects. By replacing the laser with sunlight and replacing the resin with sand, a new solar machine and a production process for the manufacture of glass objects were designed. The solar energy used by the two machines is used in electronic components, servo systems and solar tracking systems. The energy used to cut and melt sand is just the focus of ordinary sunlight.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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