An early 3D program for the Spectrum computers was VU-3D made by Psion in 1982. Printers then available might use themal paper l ( still used on cash tills )
Classes in " COMPUTING" were held at evening classes, locally. Few then anticipated something on a wrist, with camera and telephone.
The A350 XWB is said to have over a THOUSAND components made by 3 D printing. Presumbly if they are lighter this reduces the weight carried throughout the aircrafts life. ( Think in terms of the 3% of fuel per hour when tankered fuel is carried.)
My local Public Library has more than a dozen DIFFERENT 3D printers for use by the general public, with volunteer supervision. One router can deal with pieces up to 3 ft, long. Others are smaller in capacity, some havea ( limited ) colour capability.
The " Theory of 3D Printing" can be taught and practiced at small expense.
Others have built a Jet engine or a full sized Motor cycle. but both I think, out of plastic.
Houses are designed and built in a few places.
I hesitate to predict too far !
Last edited by Linktrained; 12th June 2015 at 17:07.
Reason: spelng