Originally Posted by
Tartan
I have not done one but it is recommended that the T-shirts have a fusible interfacing ironed to the back. This makes them more stable and less likely to stretch. There are a number of great t-shirt quilts on QB if you use the search box.
I purchased a very handy book called "You did What?? With my T-Shirts" and a yard and a half of fusible interfacing at a quaint little quilt shop on one of my visits to Vacaville, California. I have not started mine yet, but will get one done this winter.