Originally Posted by Diana Rainer
I still don't understand though, how using corner stones helps?
I generally use cornerstones in sashed quilts. Each sashing piece corresponds to the width of the block above it and each cornerstone corresponds to the width of the vertical sashing. Assuming that the seam allowance is even, the cornerstones can be easily matched up with the sashing. It is easy to pin and adjust as necessary. Don't know if this explanation helps.