Tue, Nov 19, 2019
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3D printers are unlike of the common printer. On a 3D printer the object is printed by three dimension. A 3D model is built up layer by layer. Therefore the whole process is called rapid prototyping, or 3D printing.

The resolution of the current printers are among the 328 x 328 x 606 DPI (xyz) at 656 x 656 x 800 DPI (xyz) in ultra-HD resolution. The accuracy is 0.025 mm - 0.05 mm per inch. The model size is up to 737 mm x 1257 mm x 1504 mm.

The biggest drawback for the individual home user is still the high which range from as little as a few hundred dollars to several thousand dollars. Another drawback is that it takes hours or even days to print a 3D model (depending on the complexity and resolution of the model). Besides above, the professional 3D software and 3D model design is also in a high cost range. 

Alternatively there are already simplified 3D printers for hobbyist which are much cheaper. And the materials it uses is also less expensive. These 3D printers for home use are not as accurate as commercial 3D printer.

Finally you should not expect to just pull your 3D printer out of the box and start printing. There is still quite a bit of setup to be done, and even more tinkering and tweaking if you want the best prints possible. Expect that a many prints will fail, and you will need to do a fair amount of troubleshooting and trial and error work.