FREECAD TUTOS: convert STL mesh to solid shape - YouTube
Easily convert STL files into solid STEP files. - Maxzprint
Downloaded https://www.thingiverse.com/thing:122410 need to change dimensions. Converted mesh into solid. Tried using Part>Split to rescale sections of the part. Couldn't do it. How can I re-parameterise part? : r/ FreeCAD
Preparing models for 3D printing · A FreeCAD manual
How to convert an STL file to Parasolid (solid geometry) - YouTube
How to use .stl not as Mesh file in Fusion360 - Fab Academy 2020 Instractor Yuichi TAMIYA