Some smart people have come up with a 3D printing machine that can replicate itself 
Being licensed under the GNU anyone is allowed to produce a 'child' printer and give it away / sell it for its ~€500 production costs. The original printer has already produced a child, and the child has already produced the first grandchild in its first few minutes of existence.
'RepRap' home site.

Being licensed under the GNU anyone is allowed to produce a 'child' printer and give it away / sell it for its ~€500 production costs. The original printer has already produced a child, and the child has already produced the first grandchild in its first few minutes of existence.
'RepRap' home site.