Originally Posted by BellaBoo

I set the seams, open and press, and then use a tailor's clapper to flatten the seam even more. I can tell a big difference in how flat my block lays and no over lap at all in the seams. June Tailor use to have the wooden clapper, I don't know if it is still being sold. At classes where I don't bring my clapper, I use the bottom of the spray starch can or bottle.