I'll chime in since my name was brought up as a person that actually *has* used a 3D printer. Actually, I'm getting fairly decent at it, and have had fewer snafus with my prints.
The company that I go through for my prints, is Shapeways. They are fairly decent. But all they provide is the *print*. How nice of a piece it is, all depends on how well the person submitting it can model in 3D.
The computer is
not going to do the work for you. I can spend a few *hours* modeling out something simple. That neat little rotational joint that my Kusarigama has, was a pain in the butt. Making sure that the *chain* on the same kusarigama didn't come out as one solid lump, was also a pain. I can tell you, using booleans in your modeling is one of the messiest ways to model.
A 'messy' model will impact the price of the printed piece. I've seen instances in which the print price doubled because of how messy the model was.
When modeling for print, make sure all your 'normals' (faces of the polys) are pointed in the right direction. A 'normal' facing the wrong direction will give you 'digital poo' on your model, and while in some cases look quite interesting, is not something you want on a piece you might think of selling. A model that isn't 'water-tight' will also give you 'digital poo'.
I'm pretty much a little 'nazi' when it comes to my models. I will spend a few days perfecting them to get an optimum model that will print cleanly, and be cost effective.
As for scanning in an object. I've seen 3D scans. They are messy and require LOTS of clean-up. Reflective surfaces will confuse the scanner. The scanners also can't handle hair, fur or most anything 'fluffy'.
Can a doll be made with this type of technology? Yes, it can.
Is it cost effective to make a doll in this manner? Not really.
Is it easier to make a doll in this manner? Not at all. While this involves a different skill-set, it's still sculpting, and might even be more of a pain in the keister than sculpting by hand.
For anyone interested in my accessories shop on Shapeways, here's a
Link. All pieces available in the shop are only released for sale once I've been able to handle the prints and verify that they meet *my* standards. There are pieces not yet ready for sale, which I am currently waiting to check the prints on before making them available... like, the Kusarigama and a Kunai.
<3
-Kiki-chan78.