Extrude yields non aligned planes
Following #1433 (closed), I re-programmed all my extrusions in opposite direction, which allows me now to connect extruded meshes to an imported CAD.
But now, the base of the different extrusions, which start from various heights to reach z=0, are not co-planar anymore as show in the screenshot, which messes up completely the boundary conditions for the solver.
Is it a matter of geometric tolerance? How to have all these surfaces at z=0 extacly? The differences are very small, something like 1e-18.