I want to make a copy the default material, edit and add to it and then use that. That's not possible apparently so I have to create one from scratch. I'm a bit stuck though. I looked at 'alibre_unicode_sample.mtl' and from that I don't quite get how to set up the new library. Can anyone share one of theirs to give me a jumping off point. Also not quite sure where save this new library. Does it overwrite the old one or will the values of both be visible (not ideal). Thanks.