I also starch my fabrics before cutting but have found some fray no matter what you do. I try to keep the threads at bay and will cut as many as I can before I put it onto the frame but some seems to hide from you until you can't get them the easy way. I read where you can get these little devils using a very tiny croquet hook from the top side. Its about the size of your needle when you hide your thread ends. Had to do this on the last quilt and it does work. I know the hole made by the hook will shrink when the quilt gets washed so wasn't too worried about it. The problem is trying to find a very small croquet hook which luckily I found at my local thrift shop.