Originally Posted by wolfkitty
I was told the higher density of the fabric makes if difficult to do the actual quilting, especially by hand. That said, I have used a sheet for backing. The less expensive sheets are not as dense.
I've used a flannel sheet for my sons dinosaur, quilt. It wasn't that difficult to quilt. I have a flat sheet for my other sons quilt, I think it's 200 count cotton thread or something and it wasn't difficult to sew through either.