Andrew Krok for CNet:  If you've ever spent time trying to put a classic car back together, you've likely found yourself at the impasse that is supply. Classic car parts aren't exactly easy to source, but Porsche Classic thinks it has a solution.

Porsche Classic, the automaker's division devoted solely to its older cars, has started to rely on 3D printing to help alleviate problems with parts supplies. Whether it's plastic or steel, Porsche's additive manufacturing is capable of reproducing a part to its correct specification, which is generally far less expensive than rebooting old production lines or ordering far more parts than owners will ever need.

To create metal parts, Porsche uses a process called selective laser melting. A layer of powdered steel is placed on a plate, and a light beam melts the powder to a desired shape, and that process is repeated layer by layer until the part is complete.  Full Article: