It's not like that though! 3D printing is not about making blurry pictures, these printers actually make physical things like prosthetic limbs, quirky lampshades or houses!!!I only found out about this, because Greensource Solutions is involved in printing, but not NASA style printing.
The principals seem similar: The machine gets a design sent to it from computer and adds layer upon layer of whatever material it uses and hey presto there's your finished product.
Apparently this technology has been around for sometime, but it feels very 21st century to me.
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