Hexagonal Antiprism
Image by georigami
Looking through my stash of folded models I found a partially unfolded antiprism which I didn’t remember folding. I examined it and was able to find the references (it is based on an equilateral triangle grid slanted 15 °), but I’m still not completely satisfied with the lock. I’m almost possitive the author is John Montroll but it is only diagrammed in "Classic Polyhedra", a book nobody seems to have, so please if you own this book send me a Flickr mail or an email (address is on my profile and I don’t want to post it here) so that we can discuss a few things.
Folded from a square of Curious paper of 20 cm on the side.