Is it possible to build a mesh from imported nodes directly, without drawing any element as curv ?
Maybe a ‘Delaunay’ connection of your points is of interest to you
For example, if do you have a text file with the coordinates of the nodes, you can import with the menu:
Files->Import->XYZ nodes…
and in the ‘File selection window’ set the option “Triangulate” or “Tetrahedrize” in order to create (Delaunay algorithm) the triangles considering the nodes in a 2D projection (neglecting its z for the connection) , or the tetrahedra connecting the 3D nodes.