Well, I don't want to disuade you Duane. To be clear, by "significant learning curve" I meant you'll probably have to devote over a dozen hours total if you want to use many of the capabilities in modern consumer/non-professional grade 3D CAD systems, as opposed to just completing a half-hour tutorial that will only teach you how to draw striaght lines and simple curves. I didn't mean to imply it would require weeks or months of study to get any use out of a CAD program!