In article ,
Martin wrote:

From the point of view of CAD/CAM, xfig is a toy. But it's intended
to tackle just the simplest tasks, rather than to handle the whole
job in a simplistic fashion, and so is useful. There are doubtless
other programs with similar properties.

Google Sketch Up is free, and easy to learn, or so I am told by my son.
http://sketchup.google.com/

A quick glance indicates that it's a lot more complicated than xfig,
but could well be worth trying. I can't be bothered to fire up a
Microsoft system to look.


Regards,
Nick Maclaren.