Since .wkf is a binary CAD file, opening it in a standard text editor (like Notepad) will result in unreadable characters rather than usable text. Hexagon Nexus
: Converting a .wkf file to a "neutral" format like STEP or IGES results in a "dumb" file. This means the parametric history and intelligence of the 3D model are lost, leaving you with only the static geometry. wkf file converter
Before converting, you must identify which type of WKF file you have, as the extension is used by several different programs: wkf file converter