I wanted to stand the cover up away from the folded pages of this book to show the pattern the folding had created. The little struts reminded me of the mechanism on a castle drawbridge.
The pages of the book were very brittle and dry and a little hard to work with, hopefully the pages are sound enough to remain in place for a while and not fall apart. Hence some pages aren't as exact as I would have liked, but there was no room for adjustment with this one I'm afraid.
Was thinking as I was folding of my teachers and parents telling me not to dog ear pages as the paper would become damaged and fall off and ruin the book. Well, this is what I'd call an extreme case of dog eared pages!