Is there any software that can accurately MASS convert dwg files and slddrw files drawings into PDF accurately ? Already tried VeryPDF and Bluebeam
Yes there is option available. Get access to computer having Solidworks. For DWG you first need to mass convert them into slddrw. For both operations you have mentioned, use Solidworks Task Scheduler. Its amazing tool which do automatic conversion on preset time.
You can find Solidworks Scheduler as follows :
Windows Start Button --> All Programs --> Solidworks 20XX --> Solidworks Tools --> Solidworks Task Scheduler