sewtruterry

I was working on a LeMoyne (sp?) star quilt and everything was going really well until the final seam and I had the largest pimple in the middle and nothing was laying flat. I showed the quilt to several people and only one person had any idea how to fix it. She told me to get a clear acrylic hammer and dampen the intersections and pound the intersections flat. Well it was amazing how flat I got everything. I also sprayed sizing on it and pressed dry so that it would or could return. But now I am wondering why the hammering process actually worked. Oh and by the way I did not have an acrylic hammer but had a screw driver with a clear handle so I used that instead.
Oh and I am sorry but it looks like I am adding this to another message but I wanted to start another thread but it has been too long and I don't remember how to anymore so forgive me for adding to this one.