imported OBJ
 

I imported a OBJ file done done in 3dsMAX into maya. everything is fine. arranged it and performed freeze transform - suddenly the shader turns black.

assigned a new shader - nothing. another geometry in this scene is shaded correctly in the viewport. the imported one has no odd connections in the hypergraph. looks just any "normal" object. no matter what I do, viewport doesn´t shade the object correctly anymore..

what has happened?

check your normals.

use set to face and conform to sort them out (look in the polygons menus)

:ninja:
A

thx for your quick reply!

I guess you are right - it was something with normals. can´t tell exactly what. I mirrored the half geo - polyUnite - merged verts. this gave a very strange shading of geo like turning normals to superhard, but only the fliped side. after converting to subDiv and back to poly everthing is finde now. phew!