I am creating a computer mouse model ( V 2001), I create it with two datum curves inb the first direction and get a fairly good result after setting up my boundary conditions, using the centre line as the boundary and setting it up as NORMAL, when I mirror this surface across my datum plane I get a good shape with no join line. The problem is that I need to use another datum curve in the second direction to get the required shape, when I create the model this way, I dont know how to set up the boundary conditions and when I mirror the surface i get a visible join line through the centre of both surfaces. Any Advice surfacing experts??? see picture attatched.......... View attachment 86