I'm trying to apply a bump map to simulate a knurl on a connector cap. See image of shader. I imported a model that was in STL format through Amapi into 3DS and then into Carrara 2.1 . The rendered image shows 3 different models. The model at the rear right is just a standard cylinder created in Carrara - it maps fine. The model in the middle is the STL converted to 3DS (ignoring the fact that for some unkown reason the model is broken down into 2 sections), and it looks as though the the bump map is applied but r-e-a-l-l-y stretched out. I was able to kinda make it looks right in a "final" image but I had to have the texture tiled 30 (!) times. The model in the front left is one I whisked up in Strata Studio Pro just for fun, exported as DXF, and it looks even worse. Any idea why the bump map is not mapping? Thanks, Andrew H.

click on the modeling wrench->edit->convert to other modeler (vertex) In the vertex modeler you may need to tweek/crease some edges if it smoothes them. Select all of the model, in the right pop out panel is a section for uv coordinates, try cylinder. now apply the shader and bump map. Hope that helps.

Thanks ppowellaa, this did not work so I just ended up remodelling the part anyway! Andrew