Here is a nice link to a fellow in Japan who has a blog explaining how he had this quite fine drop shutter built. This particular link has been Google translated into English. The translation is not perfect but you'll get the idea. The reference to Popeye attributes great strength to the average American ULF user; not quite sure what the reference to "Boston lost to the British people and leave the vertical gravity. Same as the French guillotine." is but I suspect that he means that the free drop gravity powered guillotine was more than effective with Marie Antoinette and will work well in this shutter.
Here is the link, I hope you find it useful. The first video in the link shows the very effective and smooth operation of this shutter.
http://translate.google.ca/translate...10&sl=ja&tl=en
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