The actual technique seems to be under copyright protection since it appeared in this book some years ago, so I won’t go into specific instructional details. (Just Google it for tons of examples.) But you can probably figure out just from looking at the photos that basically, you start with a foundation square, then layer concentric circles of fabric on it, stitching each one down and leaving the edges raw. Slice each layered square into quarters, mix them up to re-assemble, and you’ve got blocks that look like this.
No, the edges don’t match. The fabrics don’t coordinate, with the exception of the foundation squares. The stitching isn’t precise. I used up odds and ends of both fabric and thread. This was very much a “let loose and don’t worry about it” sort of project. In other words, definitely NOT designed for the perfectionist!
When the whole thing is pieced, layered with cotton batting, quilted and bound, you throw it immediately into the washer and dryer. Those raw edges fray and curl just a bit, and you end up with a pretty cool-looking, if very informal, little quilt.