Blender for CAD?

I have been using blender for quite a while now, it is great for CG and general modeling, but are there any tools out there that can help it be used for CAD, such as real-world precise measurements, and an exporter to AutoCad’s .DXF?

Try this. Would discuss more, but I gotta go.

the way we use Blender for architecture in my architectural studios is:

plans/sections/facades/details are developed in SolidEdge free drafting:

http://www.plm.automation.siemens.com/en_us/products/velocity/solidedge/free2d/index.shtml

(SolidEdge 2D if freeware)

then import in Blender using the .dxf importer:

http://wiki.blender.org/index.php/Scripts/Manual/Import/DXF-3D

then for renderings use:

www.yafray.org

or

www.luxrender.net

or

www.kerkythea.net

best,
a

Much can be done in blender, its just not optimal. Much has been discussed and attempted to make it more capable. Here are some handy resources:

http://wiki.blender.org/index.php/Scripts/Manual/CAD/Caliper - macuono’s measuring script
http://www.rab3d.com/ - rab3d’s excellent resources (see esp. the tutorial)
http://blender-archi.tuxfamily.org/Main_Page - Blender for Architecture
http://wiki.blender.org/index.php/Scripts/Catalog#CAD_Tools - the wiki link list

…and lots of others

As to export to DXF, there’s an exporter already in there, I think. Not sure how well it does, tho.