It should be quite possible to convert the geometry of KMZ file to an STL file. However there may not be any useful geometry data in some of the KMZ files for Stereolithography.
Convert Compressed Keyhole Markup Language (Google Earth) data to Stereolithography CAD file.
We have found 2 software records in our database eligible for .kmz to .stl file format conversion.
Microsoft Windows software - convert kmz to stl on Windows
AccuTrans 3D provides accurate translation of 3D geometry between the file formats used by many popular modeling programs. Positional and rotational information for the 3D meshes is maintained.
Convert from kmz file
to stl file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned kmz to stl. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert kmz to stl on OS X
SketchUp is 3D modeling application also available for Mac. SketchUp is easy and intuitive, allowing anyone to model in 3D quickly and accurately. Using 3D models, designers can make more informed decisions, communicate project details, and share ideas with colleagues and customers to reach a common goal.