remaining lines after using replace face

[supertramp]

often I happen to remain lines on the surfaces in correspondence of replace face or boolean carried out under tangency conditions. There is a command that allows me to "clean" the surface from those curves I attach an example image.

greetings to all

 

[The_Matrix]

a fai an optimize makes oppur an altro replace do.

 

[IPdesign]

Join face on the same surface not from the results hoped?
Let us know

 

[Utente NX]

Prova con delet makes a make coplanar make an optimize.

 

[supertramp]

the only one that can work in the case of the first arrow at the top is optimize face. but shoots everything, at this stage I cannot use it. the various replace, delete and make coplanar face I have already tried them but not always solve the problem and however can be used only in the case of 2 distinct faces and not in the case of lines that soil the surface. . .