Originally Posted by Bren49
what is OBW?
It means One Block Wonder. There are books written on both these methods.
Maxine Rosenthal wrote for "One Block Wonder" and Bethany Reynolds wrote the "Stack and Whack" series. They are similar in some respects and you get varied results with both methods, depending on the original material that you select and how accurate you are in your sewing.There are lots of tutorials and pictures on the net.