Mr Bowyer revealed the RepRap machine could become a reality within four years and his aim is to make it a universal feature of the home.
He said his invention - about the size of a refrigerator, could render many forms of traditional manufacturing obsolete.
"Four hundred years ago almost every human being was employed in agriculture, and now it’s only a couple of per cent," he said. "I suspect the same thing is going to happen to manufacturing." Rapid prototype machines work by fusing together layers of plastic according to a blueprint fed into the computer.
Mr Bowyer’s machine would also be able to incorporate simple metal components and circuits out of an alloy that melts at low temperatures.
The machines could, for instance, make complete sets of coloured and decorated plastic plates, dishes and bowls.
The objects they produce would measure no more than 12 inches in length, width and height. Larger items could be made by clipping together smaller manufactured parts.
Glass items, complex parts such as microchips, and anything exposed to intense heat - such as a toaster - could not be directly assembled.
Components the machine is unable to make could easily be added. A basic digital camera could be made with the lens and computer chip bought separately and slotted in later. Mr Bowyer plans to make the 3D designs and computer code needed for an existing machine to make one of his devices freely available on the internet.