XPost: sci.space.policy, sci.physics, sci.electronics.design   
   From: gossg@gossg.org   
      
   krw@notreal.com wrote:   
      
   >>Composites are widely used all over the place.  Many of them the Chimp   
   >>probably thinks of as 'traditional materials'.  Both concrete and   
   >>mortar are composite materials and we've been using that stuff since   
   >>the Romans.  Composites of various types are used all over the place,   
   >>from piping to appliances to aircraft to construction materials.   
   >   
   >Oh, good grief.  I suppose you're going to tell me that a concrete   
   >pump is a 3-D printer, too.   
      
   Hook it to the right controller and it is.  I saw a youtube of someone   
   printing a kid's playcastle using a concrete pump device of some kind.   
   https://www.youtube.com/watch?v=DQ5Elbvvr1M   
      
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