I've made a quilt using this design but it was on muslin squares. Didn't have to take the foundation off of that and it added a layer of "batt". Can also use spent dryer sheets for this, too, and not have to remove. There was someone who posted a Grandmother's Fan yesterday and I meant to suggest using spent dryer sheets as a 'facing' for those to help turn the edge under. Makes it very easy to turn uniformly. (Spent dryer sheets are the ones that have been used until they aren't fulfilling their intended use.)