The files aren't that large (100 k each) I can put it on the net and post the link here. I looked at the files in a text editor. I mean, all the points have 3 coordinates. What am I supposed to look for? There is a part where I find : vn -0.934054 0.357133 0 vn -0.885113 -0.464729 -0.0245207 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 vn 0 0 -1 Is this normal? f 624/624/624 629/629/629 610/610/610 f 620/620/620 638/638/638 657/657/657 f 696/696/696 684/684/684 697/697/697 698/698/698 f 698/698/698 697/697/697 687/687/687 692/692/692 f 684/684/684 699/699/699 701/701/701 697/697/697 f 697/697/697 701/701/701 700/700/700 687/687/687 f 687/687/687 700/700/700 703/703/703 693/693/693 f 693/693/693 703/703/703 702/702/702 686/686/686 f 692/692/692 687/687/687 693/693/693 695/695/695 f 695/695/695 693/693/693 686/686/686 694/694/694 f 682/682/682 688/688/688 696/696/696 f 688/688/688 689/689/689 684/684/684 f 689/689/689 670/670/670 699/699/699