Hi Mr. Yuri, the type of model you're working on with some internal structures not really visible from the outside is not very typical. Being not very typical means that it's not too likely that you will find a tutorial that would cover exactly what you are trying to do here.

Model structures like that I'd say are inherently more difficult to work with, so I'm not surprised that you get frustrated. It's not great to work on an unusual and fundamentally difficult type of model as a beginner. It's better to work on simpler models as a beginner and work on more difficult styles when you have more experience.

But it can accelerate your learning curve to work on more difficult cases though too, as long as it doesn't cause you to give up rather than gain experience of course.

I'm examining your model now to see if I can repair it, the repair job is going to be fairly complex. For a start I think I figured out there is a missing piece here which reduces the naked edge count from 20 to 18:



- Michael