Pinwheel quilt blocks

A pinwheel block turns: the same unit four times round the center, each a quarter turn on from the last. The plain Pinwheel is four half-square triangle units; Dutchman’s Puzzle turns flying geese, and Windmill and Clay’s Choice turn longer pieces round a center that has to meet in a point.

The center is where a pinwheel is won or lost. Press the seams so they spin the same way and they nest where all the points meet. Each block below gives the units, the cuts and the order to sew them.