I just found this and had to try it. I have a ton of batting that was to small to use and to big to throw away - this was perfect.
HEAT Press Batting Together is 1 1/2 inch cloth tape that will fuse two edges of batting together. It's soft, its thin, it stretches, its needle easy for hand or machine quilting.
USA AND INTERNATIONAL PATENTS PENDING
I'm sure most of you have already used this and as usual I'm behind again but I try.