I had been thinking about what to do about the spine piece but now
I can see that as long as you are weaving up and down at each opening
you don't even need the 3rd piece.
Christine,
It's true, you can simply sew the lid directly to the box, but that
wouldn't be a Secret Belgian - - to maintain the structure you need
the third piece. Personally, I like the structure of the spine/
hinge piece in there - - it's a more stable hinge, it gives the lid
something firm to rest against, and I also like the different
variations of wrapping the hinge with the thread.
Please post pictures when you're done - - I'd like to see what you
come up with.
Cheers,
Cara