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You find Practical Machinist, but you couldn't find a "jacobs chuck key 34b" ??????
What do you do for a living, or are you a ward of the state?
Or just buy another chuck.
You might want to specify the details of the chuck key, perhaps somebody has one sitting in a drawer.
Next time you visit, tell us of your failures, and we won't repeat them.
I have an old jacobs chuck that the bottoms of the holes were packed with epoxy, as well as the valleys on the teeth. I picked it all out and now the standard key fits fine. I have also had to bush out the holes because of overtightening/wear.
Joe
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