When Stark was making the new Triangle core, where the Laser beam melts everything on its path, you will notice that the wall, locker, shelves are cut into pieces, but when the powerful laser beam reaches the core, all three wires were left unscaved/not scorched. See more...
The suits were much lighter than the ones used in the first movie, and the legs were left off. From the thighs down the actors were covered in digital markers and the bottom part of the suits were later added with CGI. (As stated in Popular Science, June 2010.) See more...
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The entry you are marking as a duplicate is:
|Title||Iron Man 2|
|Original entry||When Hammer brings the parrot, the handle above the cage is leaning to the left. A couple shots later it's leaning to the right side, with no one having touched it.|