Re: deck structures

[Hrvoje]

As I can see, and maybe understand 😉 , you have the problem on this location:

and you want to have something like this?

If so, then add new face between those three points from upper picture.

Then add again one new face between three selected points

delete selected edge

collapse selected point

delete edge:

collapse point:

insert new face:

and you will have this after making edges crease:

Kind regards, Hrvoje