Jump to content
  • 0
Jheric

Recoiling balance spring using sewing needles

Question

Hello,
Have someone had experience using sewing needles for recoiling springs?
I saw a comment on youtube, his a veteran watchmaker and have been recoiling springs for about 60 years.

This was his original post

"Thank you for your honesty, only I am nearly 80 years old and have been recoiling balance springs for about 60 years. I don't use tweezers, I use two VERY small sewing needles with the tip of the eye end ground back leaving what looks like a two pronged fork then with the pointed end pushed into a piece of peg wood. These fine eye ends of the needles fit nicely between the coils of the spring with the spring sitting in the forks. It works well for recoiling and flatting the the spring. But you do have to be very calm with steady hands. Good luck."  - Keith solloway

I think this would be a very interesting topic.

 

 

Share this post


Link to post
Share on other sites

5 answers to this question

Recommended Posts

  • 0

Hi  I Have actually made some of these tools , I fitted mine into some three eights dowel rod, I like the  OP have found these useful as I think they give greater control, but like all balance spring work with either tweezers or these tools it requires great care and a steady hand. 

Share this post


Link to post
Share on other sites
  • 0

I find bending is too harsh as you create a localised bend and results in metal fatigue. Using the ground down needle eye generates a lot of pressure at the point where the spring leaves the eye. That is why using tweezers to hold the spring while applying pressure is also risky.

My preferred method is to support one side of the spring with a slightly large tool like a 0.7 or 0.9 screwdriver and use a thin rod to rub on the other side. This creates a bend with a larger radius (think English Wheel but in two dimensions). Since the bend has a larger radius any metal fatigue is lessened. This method makes very small changes so the risk of overbending and having to bend it back again is lessened. The trick with manipulating hairsprings is to make small movements.... and like anything with hairsprings, one small misstep will ruin your day.

For out of flat hairsprings.... now thats another story.

Anilv

 

Share this post


Link to post
Share on other sites
  • 0

Hi Jackie.. Sorry to say I don't have a technique..if I succeed it usually down to luck. Only tip I have is to fix the 'out-of-flat' before trying to get the hairspring concentric and in between the regulator pins.

Anilv

 

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing

    No registered users viewing this page.

  • Topics

  • Posts

    • jdm has saved me from writing up. Just to say that hairspring is in a right old mess. 
    • First, the hairsping in the picture is unacceptably distorted, many topics on the subject of correcting an HS and the difficulty of the task - high. If you want to show how an HS looks like, remove cock, lay it down and shoot from above. Then, fault finding consist of taking the entire mov't apart, clean it the best possible, inspect every part under magnification, pivots, jewel, gear teeth for damage. Put it back in the most basic form and test every function, end shake of every wheel  etc. You can do that even without oiling because it will run anyway, not perfectly but it must not stop. Again, the forum has many many repetitive threads, which will tell you always the same things, just as any book would.
    • Hi guys  Hope you are all well. I have a 6309a movement that came as part of a Seiko 5 'ebay special' I bought last year.  It would run for a few seconds and then stop again. The hairspring had a bit of a kink in it which I very gently 'straightened' but the same problem occurred. Strangely, the watch would run for a while but when I put the case back on and turned it face up, it would stop, every time.  Also, the oscillating weight feels very slack despite the screw being tight.  Any ideas of what it could be or advice on where to start with fault findings id be very grateful.  Thanks in advance.
    • Benvenuto Nicola. For the causal reader, other cities aren't fairing well this season 
    • Good question. I need reading glasses since I'm that age. I've not tried a lot of combinations but I've found that optivisor works well since you can wear glasses under them. I've mounted the extra magnification loup on my right eye when extra magnification is needed. If higher magnification still is needed, I use a standard Horotec loup in a head band without glasses.    The drawback is that the optivisor is somewhat bulky and sometimes tend to be in the way and you can "feel" that you wear it and after an hour or two you may need a break.   https://www.cousinsuk.com/product/donegan-optivisors
×
×
  • Create New...