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A sculpture of a girl at a ball! COLORED SANDSTONE HAS NOT PASSED ALL TESTS. Frosted ultra detail has passed all tests but is pretty expensive and for this model colored sandstone looks way cooler. This model is too late for my recent test order and I won't do another for awhile, but decided to keep the sandstone option up in case anyone is willing to try and order it (don't worry, you get a refund if it doesn't work).
However, I think the thin walls should be okay. I just started using x3d files for my uploads and am hammering out some kinks in the process.