Hexakaidecagonal Hyperboloidal Spring Crease Pattern
Well, this should clear things right up.
The model appears below in the comments.
Note that the slopes are differently oriented in the top sixth and the bottom sixth. That is, the valleys and mountains switch. Those form the locking closures.
White side up. I have made this model twice and don't know if I'll ever manage a third, but hey, give it a go. Here's a PDF of it.