Hi Michael, also I think that there's an option in ZSurf for it to build the surface as a cylindrical one direct out from ZSurf as well...

re:
> Sorry for adding some large files to this post Michael, but the first time I have
> attached files, and have not read up on your file limits.

No problem - for larger files like this it's not a bad idea to .zip them, they will compress somewhat. IGES files will actually compress a whole lot with being zipped. You can post up to around 40MB of attachments directly here, if you need more than that then at that point a file sharing service like Dropbox or whatever is needed instead.

- Michael