Before we start sewing everything together, we’re going to need several holes in each booklet to pass the thread through the folds. Instead of sewing directly and piercing each one on the fly with the needle -which, by the way, is hard unless you’re from planet Krypton-, we’re going to prepare each booklet beforehand so that we end up with every sewing point properly marked on every single one of the folds.

You can devise whatever method you come up with, but I think the easiest way to do these holes is making a pile of paper, clamping it and using a knife to cut through until you reach the center of the folds. These are the tools of the trade: a couple of clamps, some rubber bands and a pair of strips of whatever material you find that can be used to hold the paper firmly. In my case I use two metal pieces that were left over from one of the shelves I have in my junk room.

You could build some kind of wooden structure to do the same thing that would be more handy, but this works for me. At least for now.