Journalists who have covered 3D printing sometimes refer to the famous replicator on Star Trek. But this is not science fiction — it’s emerging science fact.
You can, in fact, create something out of thin air. What’s more, you can create almost anything you like in a variety of materials from plastic to steel.
A third industrial revolution?
Sometimes referred to as the Third Industrial Revolution, 3D printing could be the end of mass production and the beginning of customized production. Here’s how the future will look when 3D printing becomes as common as printing from your desktop printer.
Suppose you buy an expensive laundry machine, but a part breaks off. Usually, you would have to contact the store where you bought it. The salesman will talk to the repair person, who in turn talks to the distributor. The distributor will probably then get the part shipped from another country because the cost of labor was cheaper there when it came to building your laundry machine.
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But now, with 3D printing, this long, possibly expensive, chain of production comes to an end. Instead, you would simply go to the manufacturer’s website and download a CAD file. You then print out the part you need. If you don’t have a 3D printer, you simply go to your local office supply store and get the part printed there.
Here’s another example. Suppose you just bought some designer jewelry and you wanted to print out a little jewelry box for it. You could upload a design for a jewelry box from your desktop onto your CAD program, customize the box to the size and shape you want, and then send it to your 3D printer.
How does it work?
The actual technical term for 3D printing is additive manufacturing technology. While there are a number of different types of this technology, they all create 3D objects one layer after another until you have a complete object.
With regular printing on a sheet of paper, there are two dimensions: an X and Y axis. With 3D printing, you have a third dimension, which you could regard as the height or depth, and that’s the Z axis.
Building in 3D
The printed layers are developed along the X and Y axis first, then as one layer after another is added, one atop the next, the Z axis comes into existence. It’s like baking a cake in layers, adding one layer after another, until your initially flat cake becomes a tower.
Using a 2D printer, you will probably use office software, perhaps Microsoft Word, to print the sheet of paper. After you’ve written the document, you click the print icon, and instructions are sent to your desktop printer about what to do.
A 3D printer uses a digital file in a similar manner. Instead of a word processing program such as Microsoft Word, however, you’ll use a program called Computer Aided Design (CAD). Once your design has been completed, you click the print icon to send instructions to your 3D printer. As the printer goes to work, construction material is poured layer by layer.
Right now, all this may sound a little too fantastic to believe. But the technology exists and it will probably be a part of everyday life in just a few years. Even now entrepreneurs are dreaming up ways to make this technology available in the marketplace.
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