Conversion of edrw files to stp file format

It doesn't seem you could convert EDRW files from SolidWorks to anything else, as these are so called eDrawings, CAD files only meant for publishing and viewing not for further editing. You will need the original source and export that to STEP instead of making an eDrawing file.

Open EDRW file    Open STP file

Related software

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SolidWorks

A 2D and 3D CAD construction software