http://www.zwsoft.com/forum/viewthread.php?tid=2526 I have found 3D PDF to be very useful and am sending this with IGES and drawings to clients and suppliers. It is much appreciated. The only issues I have is that all color is lost. Yet all the examples I see of other 3D PDF is coloured. Why does ZW not allow colour attributes to be exported? Cheers mudcrab 2012-11-29 16:12:35 http://www.zwsoft.com/forum/viewthread.php?tid=2526&pid=16636 Hi Paul, thank you for your suggestion, it seems that some other 3d softare are using this format, I will transfer this helpful information to R&D and make some researching. William_ZW3D 2013-02-16 11:31:15 http://www.zwsoft.com/forum/viewthread.php?tid=2526&pid=16605 Hi William, just doing some lookup on the U3D format. Quote"The first edition is supported by many/all of the various applications mentioned below. It is capable of storing vertex based geometry, color, textures, lighting, bones, and transform based animation." Wikipedia on Universal 3D. Seems to me that there should NOT be any reason why color+ is not supported? mudcrab 2013-02-11 07:20:51 http://www.zwsoft.com/forum/viewthread.php?tid=2526&pid=16333 Hi Paul, What we using the 3D PDF exporting is Open-source which can't support the color attribute. We will looking for another solution in the future. William_ZW3D 2012-12-06 09:09:30