I've recently started a scratch build of the BC 304 (Daedalus DSC 02) as seen in Stargate Atlantis.
The end result will be a ship about 3.8 feet long.
This will be a representation rather than a 100% replica of the CGI shooting model. I have been unable to find accurate diagrams and measurments, so this is based on several different models I've found online (other scratch builds and CGI models).
The construction was planned to be styrene only but due to some budget factors I'll also be using 1/4 plywood that I have lying around, then sheeting over it with 1mm styrene.
I've been photographing the progress and will post pics this evening (after work).