I'm doing much of my art journaling this year in a recycled art book - more details HERE. Recently, I decided that I needed to rebind my book a la Effy Wild - by slashing the spine and adding wide strips of Duck tape. Just an FYI - I wondered why she calls it Duck tape and I've always called it as Duct tape - turns out it's not cos she's from Canada and I'm from NZ, it's a matter of Duck tape being the original name for the product.... I smiled when I saw that the one I used this time is called Bear tape!
Your pages MUST be SEWN into the binding, NOT glued for this to work. My original second-hand library book had a little tearing at the top of the spine so added just a piece of tape to hold it when I first started
Now blooming so much I decided I needed to slash and tear off the original spine and re-tape it
Here's a view looking down with the original spine laid over the new