I am also curious to see what the T-shirt quilt does when being quilted? I would almost be afraid to put it on a long arm table - wouldn't it stretch? I am going to make the same thing for a grandson, but the thought of quilting it scares me! I am afraid it will be all wonky from the stretchy T-shirt fabric. I would think a light weight stablizer on each block before the blocks are sewn together would be the way to go, unless it is carefully laid out, pinned and machine quilted or hand quilted only - the long arm table would probably not be a good choice?
Nancy