I have not tried Sharon's method. I've watched the video a couple of times.
Im new to FMQ, have only done one tester, a 36" sq carpenter star. I used 505 on it. It was small enough to hang on the garage wall to spray.I don't have a wall tall enough for a queen quilt.
how do you spray with the boards method? you couldn't keep the two boards tight together like Sharon shows in her video.