/diy/ - Do It Yourself

>>636929
>> 3d printed car is that much closer if graphene printers ever go commercial.
Graphene is already 3d printed commercially. And by graphene, they really just mean little bits of graphite embedded in plastic. It makes the plastic slightly stronger and slightly conductive.

It's mostly done for the slightly conductive part so that one can make electrostatic charge dissipation elements for airplanes(and to get a nice black color)

What one really needs is for graphite 3d printing to go commercial, as in 3d printing of carbon fiber composites

>>636929
>>636947

batteries(80%)+electric motors(90%) are already more efficient than gasoline engines(25%), HOWEVER, they are less energy dense than gasoline.

And if you take powerplants into account(yes even coal with powerplants), in some cases, electric vehicles can be greener than gasoline powered vehicles.

Again, this is in some cases, not all cases.

http://www.nytimes.com/2012/04/15/automobiles/how-green-are-electric-cars-depends-on-where-you-plug-in.html?pagewanted=all&_r=0

>>636970
hopefully he's referring to ion propulsion, otherwise....