Book binding. It really is an art form.

https://www.youtube.com/watch?v=aT5toj4EG8o

Good commercial printers in Phnom Penh are everywhere. None of them, however, specialize in book binding, and high-quality book binding work is rare. A few printers I’ve visited just looked sheepishly at the floor and acknowledged that, while they can print books, they are not very good at it. A quick glance at the spines of sample books made the point all too clear. A few others did decent, if not great, work. And while print quality was generally pretty good everywhere, paper stock was narrow.