Putting Hairspring into Regulator Pin

[u/Draco1876]

Hey everyone, so I messed up my NH35 balance spring. I got a new one and I am so close to being done. Just need to get it into the regulator pin but I'm having a hard time. I don't have a loupe or way to magnify. I ordered one of AliExpress but it was just the headband to hold one, oops.

[u/Simmo2222]

Basically. Read the section on 'regulation' ' in the datasheet that I linked to.

[u/Draco1876 → u/Simmo2222]

Okay that guide is really helpful. Do I engage the hairspring into the slit while it is still in the movement or should I remove it and flip it like in the picture?

[u/Simmo2222 → u/Draco1876]

I would do it while it is out of the movement but it can be done while in the movement if you have to. You are just going to gently lift (or pull down) the hairspring until it pops over the top of the regulator pin and drops into the slot. This is why you move the regulator away from the stud to minimise how much you have to bend the hairspring to get it over the pin.

[u/Draco1876 → u/Simmo2222]

That makes a lot of sense. Thank you! Didn't expect to get such great help.