Like say, 6 to 8 hours worth. That's how long it took Ah-Yi to make this 13" diameter version. As she says, "it's not difficult to make this lamp but it takes time". The nice thing is that most of that is spent folding, which can be done while watching a movie or some other such diversion (maybe rocking out to G 'n' R?). Click here and scroll down a bit for the full instructions.