Actually, it depends. Because if you used the poser props to make the door, they will all have the same material - Preview. What you would have to do is assign new materials to each part BEFORE you export the obj. You can do this with the grouping tool, but I haven't done it that way for years, so I can't remember how. I think you just use the tool and click 'assign new material'. Someone will know. Once you've done that, any obj export will retain the materials you assigned. mac