1) Mesh to solid conversion/triangulation & box face selection? - FreeCAD Forum
Bantam Tools Blog — How to Convert STL to STEP
Solid Material "None" cannot gain values - Site Feedback - CalculiX (official versions are on www.calculix.de, the official GitHub repository is at https://github.com/Dhondtguido/CalculiX).
FREECAD TUTOS: convert STL mesh to solid shape - YouTube
When i try to create a mesh via the FEM mesh from shape by Gmsh tool from a revolve created from a face it fails · Issue #10087 · FreeCAD/FreeCAD · GitHub