I was very much impressed by an article on "3D PRINTING" in the magazene " The Economist "
Normally we think 3D printer is an improvement of 2D printing.
But by using 3D printer , articles are formed and fabricated.
Normally when we make parts, we take material, cut, drill , fasten...
So our techinque is reduction methods.
In 3D printing, articles formed by layer by layer.
So addtitive method.
I was surprised to know why courier companies are worried over this development.
Critical spares in maintenance of crical systems are sent thru courier nowadays.
If 3D printing development becomes popular, spares can be made at site.
Ramakrishnan
