Have you seen THIS POST from Freshly Pieced in 2011? It looks like so much fun, and she shows how to do it with no specialty rulers!
I love watching people use specialty rulers, usually on a shop hop, but I don’t buy them any more. By the time I get home, I’ve forgotten how they used them!
This was used as a Block of the month for the Indianapolis Modern Quilt Guild, and I’ll be they had some great ones in their lotto!