Originally Posted by
BIGGUNDOCTOR
Sorry about that, I forgot that this was not my blacksmithing forum.
Atchbo is correct, the two pieces are held together, and apart by a leaf spring that is doubled back on itself. That way all you do is place your item between them, and hit the top part so that it comes down onto the stationary lower pert. Google spring fuller to see what I am talking about, there are tons of styles of these tools.
I am just thinking that by doing this you can rough in the hollow grind to save some time, and also forge the grain structure closer to the finished item.