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Mainspring Barrel Arbor

spiro13

By spiro13
in Watch Repairs Help & Advice

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rogart63 Distinguished Member

rogart63

Posted
Posted

Could be hard if the mainspring is new and the arbor is larger then the loop . Try to lean it in from an angle . With the tab  to the opening . You could use a pin vice to hold the arbor . Ones in it will correct itself when you first wind the movement . 

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nickelsilver Distinguished Member

nickelsilver

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Yes to both above. Ideally you have a mainspring arbor holder (yes this is an actual tool and darn handy), basically a slide locking pinvise for distinct diameters. With this you can confidently coax the most stubborn arbors into the mainspring loop. I have a bunch of them but honestly most of the time I use sturdy nickel tweezers and the tilt-it-in technique. I also have a number of hours of barrel arbor floor searching under my belt.

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anilv Distinguished Member

anilv

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I lay a thin sheet of rodico and make a divot for the end of the arbor. This holds the barrel securely.

Then proceed to hold the arbor flat while working the spring around with a needle (oilers are too delicate).

Anilv

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