This is a structure I created (by accident). I'm taking ownership of it, but it's possible that someone else in the sea of 7Billion people on this planet, has done this before.
Watch the video all the way through before you attempt to make your book.
Make a prototype first so you can see the nuances of the slit and the angled flap AND the spacing between each score line and fold.
Share your images on Instagram. Use the hashtags #7books7days #bindbookswithme