[JasonB]

Well, I'm no Blender expert, but I thought I'd try it out because I'm away from home and haven't got my usual 3d software available.

It's taking a bit of getting used to, to put it mildly, and I should stress that my primary interest is in presentation drawings, not printing.

But it does look fantastic, and easily matches some very expensive software. That's quite an achievement for free software. Very impressive, but not necessarily intuitive to use.