I usually iron the top and back very carefully. (If there are any wrinkles or folds visible in the fabric before you start free motion quilting, they will be there when you are finished, too–and they are much more difficult to remove after quilting!)
Then I steam the batting a little-if it has any major creases…
Finally, I layer the sandwich, smooth the back with my hand and then press it from the top. This is enough to hold the layers together while I stitch. I am not sure this method holds for a long period of time– I think it is a small amount of moisture from ironing that holds the layers.
So the next time you’re in a hurry to get your ideas down on the fabric, give this method a try!
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