Is it possible to visualize two surfaces for the same model? I was thinking for example for the purpose of showing two different levels of a map with the lower one as a semi-transparent surface. The work-around is to load the same map twice into two different models, but that will take up more memory and is more cumbersome. Regards, Daniel När du har kontakt med oss på Uppsala universitet med e-post så innebär det att vi behandlar dina personuppgifter. För att läsa mer om hur vi gör det kan du läsa här: http://www.uu.se/om-uu/dataskydd-personuppgifter/ E-mailing Uppsala University means that we will process your personal data. For more information on how this is performed, please read here: http://www.uu.se/en/about-uu/data-protection-policy