First, prepare a thick needle and some thick threads. It is better to have a bookbinding punch. If you want to bind thick books, you need a binding punch, which is more convenient to bind.

We need to align the paper first, so we can clamp it.

Then measure the length with a ruler, and then calculate the hole spacing you want, which should be uniform.

After the calculation, you can punch holes and then pad some thicker targets.

When everything is ready, we will start sewing, and the middle thread must be tied tightly and neatly in this process.

Just tidy up the thread at last.