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Re: How to disassemble a Chronomatic movement

Congratulations - this is a difficult task to take on, especially with a movement like the cal 15. A couple of questions - was the movement already wound down when you started or did you have some way that you let the mainspring down before removing the 1142 bridge? Most movements were made so that the mainspring could be easily let down prior to disassembling but not the cal 11 - 15. My other question is why was the balance not removed 1st to avoid any damage to it during the rest of disassembling? Having damaged a balance or balance spring with the slip of a screwdriver is something I have personally experienced more that once. Anyway, this is very good documentation with great pics. You have put many hours into this - thanks for sharing.

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