Drafting Electrical Fittings

I have been thinking about starting a library of common electrical fittings. Does anyone out there have a need for drafting electrical fittings ? Most electrical CAD symbol libraries have the simplified schematic versions of electrical boxes and conduits and such. But I know there have been occasions where I could have used an actual model of a standard electrical box. One of my customers builds speaker boxes and fire alarm components and these have to be bolted on to standard electrical boxes. There must be other companies that run into the need for more detailed models in drafting electrical fittings.