Question about shortening mainspring

[gouldian]

Hello,
After heating a spring to collapse the last coil should the spring then be left to cool down naturally or does it need to be quenched in oil or water
Thanks.

[tinbum]

Hello,
After heating a spring to collapse the last coil should the spring then be left to cool down naturally or does it need to be quenched in oil or water
Thanks.

Never, ever quench. Not in anything.


Ever!

[barrel]

Naturally, naturally.

Kindest regards

Barrel

[rapidresponse1]

yes as above

[gouldian]

Thanks for the replies. No quenching

[JerryD]

Quenching will make it hard and brittle. Not a good thing in a spring.....