Pffffft that's the sucker's method. What you do is this, find your biggest cordless drill, and pop the bit out, then slide the chuck over your watch crown, set the drill to clockwise, and to the fastest speed setting, then hold the watch VERY tightly while you depress the trigger. Patek Philippe have been recommending this method for decades!
Or wait.. maybe I'm thinking of Invicta.. I always get those two confused :S
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