I have backed a T-shirt quilt with minky BUT I tied it . I have made a baby quilt with the minky back and just bar tacked it here and there in the corners and middle of the blocks etc. That's what my grandkids want on the back of their T-shirt quilts Minky!! Which is tied either with 3 strands of embroidery thread or crochet thread, which is a little like fine cord.