Originally Posted by redmadder
I used that technique for years, learned it from reading about fine tailoring. My seams on hemmed jeans last longer than the jeans. It has no more effect on the fibers than pressing hard with the iron.
Thanks, that thing about the fibers had me worried for a moment, but then it is a soft type hammer and designed for this. They did have a firm but well padded board to use with it. I already had that.