OT: (but could be related) Jay Leno?s 3D Printer Makes Old Car Parts - NextEngine 3D scanner and Dimension 3D printer - Popular Mechanics

[Sridhar Ayengar]

Roger Holmes wrote:
> Didn't there used to be a problem with 3D printed parts going brittle 
> and breaking when subjected to UV light, like sunlight or fluorescent 
> lamp light?

Depends on the medium you use.  Various media have different 
characteristics.  In Mr. Leno's case, he's only using the plastic bits 
to have metal molds made.

Peace...  Sridhar