I use safety pins. I always make sure that the quilt sandwich is right before I start pinning. My first quilt was a Queen and when I got to the edges, the backing was too small. So I had to unpin about a million pins. Then I bought new backing and when I got to the edges, I found out the batting was incorrectly put on. So I unpinned again. I have read on the board about using Elmer's School Glue on even Queen size quilts and I think I will try it on some lap size first and then go on to the larger quilts. I have tried the iron on batting and that was a waste of time, I never could get it to stay. Try various ways and find out what you like.