Originally Posted by
ghostrider
If your backing is exactly x" larger on all sides than the batting (you can add muslin borders beyond the actual quilt back, just make sure the back is centered accurately), and the batting is exactly x" larger on all sides than the top, then you should be able to align the back with the front by making sure the excess batting and backing both stay at that x" measurement on all four sides. Dense basting helps immensely. Disclaimer: I've never done this technique larger than a 60" square lap quilt, but it did work out very well in that case.
Thanks Ghostrider. I was thinking about this today. I don't usually worry too much about how much bigger the backing and batting are than the front, but I just realised that if I went for an exact easy recent it would make it easier to check the positioning of top and back.