I've just done a binary comparision between a CAD and a SKF file - they
appear to be virtualy the same.
Bear in mind that if you do a "Save As" it often strips out some of the
clutter that's in the file, so if you created the drawing over time as an
SKF, and then did "Save As" CAD you will have stripped out the clutter (same
works for SKF). I often find that doing a "Save As" when working on complex
drawings over multiple sessions speeds things up and reduces the file size.
"Gadget" wrote in message
news:13341060.1097163516643.JavaMail.jive@jiveforum2.autodesk.com...
> It /may/ be that .CAD files use a different method to save the information
than .SKF - more compressed, but slower to open/save into? No loss of
information - just a different format.
>
> Good luck in getting anything from Autodesk!