Seems like they have a new material on offer. It's trial and it's WOOD!!! So maybe 3D printing building kits and scenery items then?

http://i.materialise.com/materials/wood
Cheers!
​JBM.
Not for T Gauge!!!! Look at the design constraints. The minimum resolution for a surface indentation is 1.5 mm, which is greater than the thickness of currently available loco shells. And the minimum wall thickness is 3.0 mm, which is ....track gauge!So maybe 3D printing building kits and scenery items then?