I was warned about Poser models being virtually impossible to print but I also got advice with Meshlab and Netfabb. I created a character based on Poser Michael, I exported it as an OBJ file, I imported it in Meshlab and use filter- cleaning- remove duplicated vertex and then save it as a STL file; then I imported it into Netfabb where I healed-repair, I got a green file ( good! ) and uploaded to Shapeways that found this unfixable error. Triangles with mixed winding order found (inverted normals) " I know they use mesh medic and a manual fix but of course with a little more complex problem they don't have the time. I tried to do something in Blender but it is very hard for a unexperience user. The model came as a spec of nothing and when I save it as a obj it did not import right into any 3d package. Well here is the file. Any ideas?