Likewise, here is a circuit board that I have worked on. Your idea of using "using texture mapping" to show circuit board traces is great! Thanks.
I previously asked if anyone, was doing similar work and wanted to share electronic component libraries. Maybe there is more interest now, see:
http://www.ac3d.org/forum/showthread.php?t=3132
(This circuit display was created using only AC3D.)
This is a mockup of a four axis CNC controller, it has not been actually created yet.