ok...i modeled this OBJ grenade in C4D R8.2....then assigned the material groups in UV mapper...then take into Carrara 2.1 for shaders and rendering....then the problem---> in UV mapper i grouped 3 material groups. 1. the body called "Body" 2. the pin called "Pin" 3. the top end called "Head" then i group all vertices/facets and assigned all to one group called "Grenade" when i take this OBJ file into Poser 5 theres no problem...i can change the texture of each of the three material groups. But when i take it into Carrara there is only one material group....so when i apply say the color green to the body, it also ends up coloring the pin and head. what am i doing wrong? please help.. thanks for any tips. BT

another version of the render

Hi, don't take the 3 groups and put them into one overall group in UV Mapper. Use these settings on import and your 3 grenade parts will show up in the shader room under a "layer list" shader. Different shaders can be applied to each part on the list. mdc

thanks very much! i'll try that. =) -BT

Not quite. Carrara, as of ver3 at least, uses "Mapping zones" which correspond with materials. With a MTL file created by Poser, Carrara will create a proper layers list shader with the right materials zones. On a straight import, however, it will all come in with a single zone...you'll need to open the object again in the vertex room and assign groups of vertices to mapping zones manually. An odd and similar thing happens in the reverse; if you set up mapping zones in Carrara then export, you get an .obj file with NO usemtl statements. My experience was I needed to create a layers list shader and put something in every layer in the materials room before Carrara would "confirm" the material zones and export proper usemtl lines.