Thanks! That reminds me: one thing I did on the second and third book blocks was clamp them further in, so they were more or less flush with the boards. (I think the bookbinding book said to let it stick out a bit). That let me compress the spine an extra millimeter or two, so it wasn’t as flaired as on the first one. I think it’s always going to be a little thicker on the spine side because of all the folds and thread, but I think this looks better.