plz convert these to igs
Many good answers already on the previous posting you put up. Especially from Sar Dar:
Use GrabCAD Workbench. Upload your sldprt file to workbench then you can right click on the uploaded file and select "download as". You can download the file in the format of STEP, IGES, STL, Parasolid, ACIS, JT, or VRML.
If your still struggling I'd advise you to check out my tutorial for converting files in Workbench