looking for spacebar CAD files

[Jmneuv]

I'm very interested in giving shapeways a shot and also some cad to go with it.
My equipment to precisely measure or 3D scan however is non existent.
Since my sights are on profiles and spacebars at the moment i'm looking for some existing cad files, especially for the universal spacebar.
I'd like to slightly modify one and get it printed.
Files like that must surely be out there (i.e. metal spacebars), just not sure they've been made accessible.
Thanks for any pointers.