From FreeCAD Documentation
- Select a single mesh object.
- There are several ways to invoke the command:
- Press the Refinement... button.
- Select the Meshes → Refinement... option from the menu.
- The Remesh by gmsh task panel opens.
- Specify the required settings. See the Gmsh mesher settings of the Mesh FromPartShape command.
- Press the Apply button to remesh the mesh object.
- Optionally change one or more settings and again press the Apply button until the new mesh is to your liking.
- Press the Close button to close the task panel and finish the command.