Most individuals do not go smack after the big one immediately upon trying to start up and operation. We are not talking just a few thousand dollars, but lottsa more than that. Presume that you have gone to CAD school already, and read many of the design books, and have already roughed out a few revisions to existing models now. Now you know what questions to ask, of some vendor, "will it do this...."

But, basically there is zero design softwares out there onna market right now. Many, many CAD softwares that will help in the drafting though. Most folks here use the grey matter between their ears, instead of the calculator.


Wm.