Hello ,
 
i ma using autocad 2005, i need to open .step file in autocad. Anybody know how do i open it.
 
or is there any way to open it ??
 
 
please give me reply as soon as possible
 
 
thanks

You would need AutoCAD Mechanical, Mechanical Desktop or Autodesk Inventor. Plain AutoCAD doesn't read STEP.

thanks for reply,
i have inventor , but can you please guide me brief.
thnaks
 
 

It is easy - just drag and drop the STP file in the Inventor application window.

yes that i did it .
actually, that step file has 3d model. and i want that model in autocad. b'cos i have rest stuf in autocad 3d. so please guide me.
thanks
 

Once loaded in Inventor, you can save the 3D model to DWG (see e.g. AEC Exchange).

thanks