Mainspring Broken End

[steven]

Is there any way to modify the broken end of this winding watch's mainspring to make it functional again?

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Edited December 17, 2015 by steven

[rogart63]

Nope i don't think so. I have seen it done but i don't think it will hold in the long term? You should go for a new spring? The spring looks tired also? 

[cdjswiss]

I am inclined to agree with Rogart, but there is a repair procedure detailed in de Carle's book  "Practical Watch Repairing", Pages 88/89. The broken end is bent over with some heat to form a hook and then a short piece of mainspring is used to link the hooked end to the barrel hook. Not too difficult, but certainly a fix only when a suitable replacement cannot be obtained.

[rogart63]

I am inclined to agree with Rogart, but there is a repair procedure detailed in de Carle's book  "Practical Watch Repairing", Pages 88/89. The broken end is bent over with some heat to form a hook and then a short piece of mainspring is used to link the hooked end to the barrel hook. Not too difficult, but certainly a fix only when a suitable replacement cannot be obtained.

That is probably where i have seen it before or read it ?

[steven]

Thanks guys, I'll try out the Carle's method as the replacement is hard to obtain.

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[steven]

Update on the mainspring repair done, de Carle's method.

Cheers. [emoji3]