Another Designcad user, wahoo! It "was" the best cheap DOS cad
because it printed accurately on nearly any dot matrix printer, and
equally well on old plotters. Not very intuitive for 3D work though.
> Currently I use Sketchup for 3D, it's free and super easy to learn,
> but very powerful and allows you think well on screen. But it doesn't
> do 2D, so I still also use the program I've had since DOS days,
> Designcad. I make no claims for it other than it's cheap (<$100)and I
> know it well so I'm fast on it.