Originally Posted by
leatheflea
I agree making them a tad bigger and cutting down is the answer, more time consuming but accurate. If they seem to shrink maybe your iron is to hot? If using steam, DON'T. The method in your link I've used, and it works if you can get that middle seam correct.
I usually do (if possible) make any block bigger and take the time to trim them down perfectly after they have been starched and pressed. I always assumed that using steam and not prewashing fabric, that they shrunk a tiny bit smaller. It does take time to trim but then you have perfectly size blocks. Good Luck !!