convert pdf file to dwg

[Sara13]

Hi, everybody, I have a big problem.
I have to pass files in pdf format in dwg.
I have already tried with a free program, and the pass happens, but unfortunately when I go to open autocad 2007, the file is so heavy that I can't work (20 30 mb). What do I do? the tables are both corographs and prg of a wide area or even simple technical drawings of a hydraulic artifact.
Please help me
I attach an example of a file before and after transformation

 

[Exposchool]

if you have chorel draw (better if version 12) open the files in pdf, select all set entities - fill the null areas - thick lines "contour thread".
export to dxf autocad format 2.5 - (option keep text as text) and then open it with the autocad you want.
It's absolutely perfect, at most it's to climb.

There is a program called open draw that automatically performs all these functions. but lasts 30 days and then you can buy it - costs 100 €

Hello
exposchool

 

[gerod]

I would say that to do what you want you must definitely buy something commercial.
illustrator does, for example.
but the files could be heavy.

 

[x11start]

c'è progecad (now arrived at the 2010 version compatible with autocad 2010).

It is a cad very similar to autocad (except for the price!) that manages to transform in a very precise way the pdf in dwg.

the demo version lasts 30 days and has all the features .... is a great alternative to autocad .... and also allows you to use programs in lisp!
http://www.progesoft.com/it/