I do not count this into sculpting category, but there is also open source and free software for creating human forms:
http://www.makehuman.org/
I used makehuman instead of "wooden posing puppet" for my polymer clay exercises.
There are several file formats that printers can load, and also many of ways for converting from one to another.
There are many ways for printing DAZ figure - no technical problems there
BUT, such prepared human forms are published with copyright, You can't do what You want with them.
I'm pretty sure DAZ does not allow printing - but You should check their copyright.
Check for example this part of Shapeways terms of use:
http://www.shapeways.com/terms_and_conditions
User Generated Content
The term “User Generated Content” when used in this Terms and Conditions shall mean any content uploaded to the Website by you, including but not limited to all uploaded 3D designs, pictures of your 3D objects, pictures of any model, comments on the Website, specifications provided in your order for a CoCreator model, as well as the printed model we create for you based on your User Generated Content.
All User Generated Content should not be or contain abusive, harassing, threatening, defamatory, obscene, fraudulent, deceptive, misleading, offensive, pornographic, illegal or unlawful information or be likely to infringe or infringing on any intellectual property rights.
Intellectual property rights means copyright, patent, registered design, design right, trademark, trade secret or any other proprietary or industrial right.
So, if You plan to print or make copies of Your piece, you should start from the "ball" and not use any of prepared content - except the content You created Yourself
Sorry, my English is bad, but I hope You got the point