Thank you for your reply. But if it is assignment problem why it is not a problem when the edges have smaller number of mesh nodes assigned?

But if it the only way to make it work properly, how to assign everything sufficiently? Due to high density of blocks it is impossible to choose correct surfaces/edges/vertices from the inside of the model.



Edit: I went back to the project's save before setting all the edges' parameters and re-do all edge setting, but this time I recomputed the pre-mesh after every change in the edges' settings. Mesh is perfectly clear and structured now. I did not make any associations.

Although my question, for future meshing, remains: is there any method to make association process more convenient/clear for complex models with many blocks in the same part (e.g. for choosing internal surfaces)?