Originally Posted by
thrums
Thanks for your advice on the fusibles. I was afraid of puckering when being washed.
Muslin may give it the weight but not the stiffness I'm looking for.
You could make a practice sandwich that you edge stitch or finish as a potholder and then wash. Measure first, to see if additional shrinking happens and that would give you an answer for your specific pre-washed fabrics, etc.
I haven't seen puckering from the fusible interfacing.