3D "Sketching" - Need Help Finding Application

Griffin_Kemp · 2009-06-20T16:29:09

I need a very, very, very easy 3 dimensional "sketching" program. The purpose is to sketch pretty complex constructs very similar to roller coasters, but I do not need to model them in great detail at this point. What I do need is a 3 dimensional environment that allows me to brainstorm the "track" path of a roller coaster rapidly, and make adjustments as I change my mind very easily and quickly. I would prefer if it was able to easily bend and curve rectangles, as rectangles are an easy object to visually see the 3 dimensions of perspective and path travel with for conceptual viewing. It would be preferable that the product be either free or very low end (again, graphic quality is not a high priority here), as this isn't at a budgeting stage; only a proof of concept stage. Thank you in advance for any help that can be offered. (Yes, I did look through the sticky as well as downloaded several from searching on the internet; all programs seem to involved, slow, and detailed for what I am looking for.)