Hello Anna & co, I wanted to share one more trick - Use YOUGHURT (or SOUR MILK) to paint the glass (like this: http://www.pixelache.ac/2002/stuff/vkuvat/20.html) it dries quickly and you get an odour free, high quality back projection screen that you can just wash away when needed.... best, juha. .: [log in to unmask] :: www.juhuu.nu :: www.pixelache.ac :.