if you open the STEP files with a text editor, you should be able to know the last STEP producer/exporter.
the header is something like this:
Code: Select all
ISO-10303-21;
HEADER;
FILE_DESCRIPTION (( 'STEP AP214' ), '1' );
FILE_NAME ('sphere.STEP','2016-09-25T16:33:48',( '' ),( '' ),'SwSTEP 2.0','SolidWorks 2014','' );
FILE_SCHEMA (( 'AUTOMOTIVE_DESIGN' ));
ENDSEC;
DATA;
Code: Select all
ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('FreeCAD Model'),'2;1');
FILE_NAME('example.step','2020-01-13T07:43:58',(
''),(''),'Open CASCADE STEP processor 7.3',
'FreeCAD','Unknown');
FILE_SCHEMA(('AUTOMOTIVE_DESIGN { 1 0 10303 214 1 1 1 1 }'));
ENDSEC;
DATA;