Some four years ago a co-worker had Shapeways print a small part
for him using their stainless steel process, and we were all very
impressed with the resolution and fidelity to the solid model.

Pricing is reasonable, and the material yield strength is an
astonishing 427 MPa.  I'm sure by now they have several competitors,
so shop around.

Marshall Jose

 [ Shapeways is a New York-headquartered 3D printing marketplace
 [ and service bureau.  See https://en.wikipedia.org/wiki/Shapeways
 [ and https://www.shapeways.com/  -- Robbie