артём вараб (artem warab) – how 3d printer works behid the scene كلمات اغاني
even the most talented artists struggle to depict real_world objects in their full three_dimensional (3d) beauty. most of the time, it doesn’t matter because looking at a photo or sketch provides us a decent enough impression. however, if you’re in the business of producing new products and need to show them off to clients or consumers, nothing beats having a prototype: a model that you can touch, hold, and feel. the only problem is that models take a long time to construct by hand, and equipment that can produce “quick prototypes” cost a fortune (up to a half million dollars). so, hurrah for 3d printers, which work similarly to inkjets and build out 3d models layer by layer at up to ten times the speed and a fifth the cost. how precisely do they function? let’s get a better look!
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before computer_aided design (cad) and lasers, models and prototypes were painstakingly carved from wood or glued together from little bits of card or plastic. they can take days or even weeks to make and are usually very expensive. getting adjustments or revisions made was difficult and time_consuming, especially if an outside model_building company was hired, which might deter designers from making improvements or taking last_minute suggestions into consideration: “it’s too late!”
with the advancement of technology, an idea known as rapid prototyping (rp) arose in the 1980s as a solution to this problem: it refers to the development of models and prototypes using more automated processes, usually in hours or days rather than the weeks that traditional prototyping required. 3d printing is a logical development of this concept, in which product designers use sophisticated machinery akin to inkjet printers to create their own quick prototypes in hours
consider making a traditional wooden automobile prototype. you’d start with a solid wood block and cut inward, like a sculptor, gradually uncovering the “hidden” object inside. alternatively, if you wanted to produce an architect’s model of a house, you’d build it like a genuine, prefabricated building, most likely by cutting small replicas of the walls out of card and glueing them together. now, a laser might easily slice wood into shape, and training a robot to put cardboard together isn’t out of the question—but 3d printers don’t function in either of these ways!
a common 3d printer is similar to an inkjet printer that is controlled by a computer. it creates a 3d model one layer at a time, from the bottom up, by printing over the same area repeatedly, a technique known as fused depositional modelling (fdm). the printer generates a model over hours by converting a 3d cad plan into a slew of two_dimensional, cross_sectional layers—effectively discrete 2d prints that sit one on top of the other, but without the paper in between. instead printing ink, which would never accumulate in large quantities, the printer deposits layers of molten plastic or powder and fuses them together (and to the existing structure) with adhesive or uv radiation
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