I also tried the "Clip the Corners" method and my fabrics still frayed, didn't seem to be any less or more than if I did nothing to the edges. This was also LQS type fabric. I tried the pinking shears trick and it didn't stop the fraying. I've also sewed along the edges prior to washing but it still frayed. Some fabrics don't fray at all and then some others I will loose at least an inch off the total cut. I ALWAYS was in cold on a delicate cycle and only put in the dryer until damp them iron. sorry, I don't have any positive answers for you!!