I tried it when I first discovered it way back.. it was not what I had hoped for... I find spray basting to be mmuch more to my liking. As for getting it flat .. I use my iron ( set on just warm ... no steam) to go over the first part of the sandwich get that as flat as I want.. then do the second layer .. and I iron again. Thats what works for me to get it as flat as I can possible get it.