Does a 3D printer mold 3D structures using plastic or a limited amount of other types of material (AKA ink or whatever we want to call it) that can be pasted and then hardened? I've not looked up how 3D printing works but I assume an average 3D printer won't be able to build houses, cars, or build using metal, steel, iron, brick, titanium, or wood or other things. When I first heard about 3D printing, I assumed it would be like a bunch of robotic arms inside a small manufacturing assembling-line factory where it could build anything out of whatever material you gave it. But I guess 3D printers are not that complex but 3D printers can do some things which is still pretty cool. I will have to lookup what kind of ink or material you can feed it and lookup whether or not people can actually build guns using 3D printers or say how about a small plastic trash can, can it make something like that?
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