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friday :: april 29, 2005
   
 
universal constructor: replicating machines

Research by engineers at the University of Bath could transform the manufacture of almost all everyday household objects by allowing people to produce them in their own homes at the cost of a few pounds.

The new system is based upon rapid prototype machines, which are now used to produce plastic components for industry such as vehicle parts. The method they use, in which plastic is laid down in designs produced in 3D on computers, could be adapted to make many household items.

However, conventional rapid prototype machines cost around £25,000 to buy. But the latest idea, by Dr Adrian Bowyer, of the University’s Centre for Biomimetics, is that these machines should begin making copies of themselves. These can be used to make further copies of themselves until there are so many machines that they become cheap enough for people to buy and use in their homes.

Dr Bowyer is working on creating the 3D models needed for a rapid prototype machine to make a copy of itself. When this is complete, he will put these on a website so that all owners of an existing conventional machine can download them for free and begin making copies of his machine. The new copies can then be sold to other people, who can in turn copy the machine and sell on.

As the number of the self-replicating machines – there are now thousands of conventional rapid prototype machines – grows rapidly, so the price will fall from £25,000 to a few hundred pounds.

“People have been talking for years about the cost of these machines dropping to be about the same as a computer printer,” said Dr Bowyer. “But it hasn’t happened. Maybe my idea will allow this to occur.”

Dr Bowyer said the machines were a form of Universal Constructor, first proposed theoretically by the mathematician John von Neumann in the 1950s. He also said their progress would be similar to that of a species in nature – as the machines replicated, so their users would vary them to suit their needs, some making larger objects, some more accurate devices and some making devices more quickly >from *New machines could turn homes into small factories*. A revolutionary machine which can make everything from a cup to a clarinet quickly and cheaply could be in all our homes in the next few years. March 16, 2005

A universal constructor is a machine that can replicate itself and - in addition - make other industrial products. Such a machine would have a number of interesting characteristics, such as being subject to Darwinian evolution, increasing in number exponentially, and being extremely low-cost.

The project described in these pages is working towards creating a universal constructor by using rapid prototyping, and then giving it away free under the GNU General Public Licence. >from *The RepRap Project*. Replicating Rapid-Prototyper Project


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imago
>
fading copies

sonic flow
>
replicating machines [stream]
replicating machines [download]

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