I'm going to be designing a rather complex home climbing wall (kind of like this one http://www.chockstone.org/TechTips/Woodie1s.jpg but bigger) and need something to do cad in Linux or OS X (hopefully an X11 app, since I'll only be doing the CAD on OS X until I get my new Linux box).

I don't require any terribly special features, except that the price <= 0.

If it can output renders to PDF or PNG or some other universal image format that would be a huge plus, nay a requirement.

Oh and I will worry about hold placement later, I don't need a CAD that will stamp holds for me, I just need to do the structural faceting...

Any suggestions ?

qcad is a 2-dimensional CAD program for linux, if that is good enough:

www.ribbonsoft.com/qcad.html

Thanks for the suggestion and for the link.

I suppose in a pinch it will do (I've taken enough technical drafting to do it in a pinch) but I would really like something that could produce a 3D wireframe, if that exists for Linux.

CYCAS is a 2D and 3D CAD program.

Still free, I'm amazed! I'll take a look at that, thanks.

Never did CAD, but here's what I collected.

http://www.websamba.com/Linux_Docs_Links
-> softwares
-> CAD/Rendering/Graphics

Sheng-Chieh