I had saved the crease pattern a long while ago and finally decided to fold it
I've folded my share of flagstones. I've even designed a few.
This one is certainly different. Even if you're familiar with the technique, this one will present a bit of a learning curve.
Its unusual teardrop shapes require a great deal of prefolds. There's a lot of stuff happening behind the scenes to make everything work.
His original crease pattern still lives on flickr
It's a nice departure from typical tessellations both regular and the flaggie sort.
I've seen and folded the teardrop shape before. Not in this way though.
Definitely gets you to thinking about other shapes which may be possible.