Hi guys, I have had some success getting some anatomical models printed, but one of my vertebral body models keeps getting rejected as having walls that are too thin, despite netfabb giving the all clear. Now, I'm not really any good with Blender, so can anyone help me or tutor me in a good method to FIND the thin walls and then make JUST those walls thicker? I've tried the solidify modifier, but that does all the walls. Also, there are bits 'floating' inside the body of the model - any ideas how to remove them? Again, a tutorial or explanation would be great! The .stl can be found attached Many thanks in advance!