Converting 2-D DXF to 2-D DXF possible?

[BitBanger]

Hi,

Is it possible to convert 2-D DXF AutoCad drawings to 3-D DXF format?
Preferably with a free/open source program.

Thanks in advance!

 

[designer]

Not really. To convert 2D to 3D you need to know where the z position is of
all x,y points. If you have full orthogonal views it is possible to define
the z position of points on say the front elevation.
However many 2D drawings do not have this, yet the brain still manages to
produce a 3D image from limited information. The brain is a wonderful
thing!