For interest sake, here are a couple of pictures I took through the windows of the hammering rooms at the Paiste factory in Switzerland last year. You can see the hammering machine in the first picture and the table with the various hammer heads on it in the second. There's also a regular hammer sitting there. Maybe it's only used to change out the heads...who knows. If you look at the Nicko McBrain factory tour on Youtube you can see the hand hammerer tweaking the cymbal with regular type ball peen hammer.
[IMG]http://c2.ac-images.myspacecdn.com/images02/59/l_8771b70a67af4593a5bae98d2af6a6a1.jpg[/IMG]
[IMG]http://c3.ac-images.myspacecdn.com/images02/17/l_e08bf7cd052744f5ad570f8566295006.jpg[/IMG]
And here's the Youtube link....
[ame]http://www.youtube.com/watch?v=sKZEyXM5ZiA[/ame]