Hi All,

12/11/2013 - PROBLEM UPDATED AS PER REPLY

I am creating a headform (size designation 535) according to BS EN 960:2006, I have plotted the spherical coordinates (given in the standard) using construction lines about a central reference point and joined these points using splines to give an idea of the desired surface for half the headform. I am finding it impossible to transform the 3d sketch into a solid. I don't seem to be able to mirror the sketch about the central plane. Can anyone offer any advice?

This is what I currently have:

Thanks,

Chris