Lego 3D Printer

You might think, yet another 3D Printer, but this is made out of Lego and bits and pieces he scavenged from other electronics he had lying about. Cash Strapped 20 year old engineering student Matthew Kreuger didn't have between $800-$2500 to buy a 3D Printer so he built his own. This is not yet the finish product, as there is more programming and testing that needs doing.

These are the articles we love to report about here at Design Stack. Not only does it show that there are many different ways of producing the same thing, but that technology doesn't have to be prohibitively expensive to work.
If you want to construct a similar machine, you can go to his site where he gives you a list of the components together with the drawings you will need to assemble it.