Iron Man preparing to shoot. I didn't make this 3D model but i can't remember who did it or the web site i got it from. I did repair the mesh with Netfabb to be able to print it without problems.
Be sure to add more supports to the arms in S3D (or your favorite slicer) so that the support for both arms don't move during printing. I didn't put enough supports for the left arm and it got all screwed up because the supports moved at the waist line. I had to print a left arm alone and reattach it with some plastic welding.