Hi Id like to thank you for your reply and it seems I am past that stage . I am now at the stage where I have duplacate layers in sculpt and however I delete these I always end up with the ones that are not visible , this means that the model I export is never the one that I import . I will try to explain , as I cannot navigate I create new layer for new parts of the sculpt , but they are duplicating voxels I think, switching them off and on to see where I am is no good as I never get a true picture . I then retopo and only a part of the mesh is retopoed, the mesh is not merged down because merge does not work, or at least I dont know how to make it work. Now I import and Ive got half a mesh with a uv . So if you can work that out , maybe you can tell me how to do some of it , like merge layers for a complete retopo , or how to see what I am actually exporting , as some of it may be visible to me but not to the programme . I feel I am making some progress , but it aint easy. thanks nick