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Tool for straightening pivots?

rogart63

By rogart63
in Tools & Equipment

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Cad101 Super WRT Addict

Cad101

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hello Seitz do a pivot straightener I think I remember seeing one while surfing one day and nearly having a heart attack at the price.

Cad101 Super WRT Addict

Cad101

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That's the tool I remember the price was above £400. Another example of bergeon fleecing the poor watch repairer.

bobm12 Distinguished Member

bobm12

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12 minutes ago, szbalogh said:

Is it heresy to straighten in its own hole?

In my book, nothing is heresy as long as it works and doesn't screw things up more! If the plan is good....go for it! I've never done it so let us know how you fared!

Cheers,

Bob

Cad101 Super WRT Addict

Cad101

Posted
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I don't think you would get a perfectly straight pivot by using its own jewel to straighten it because of the hole tolerance. As I could see the pivot straightener uses progressively smaller jewel holes to straighten the pivot. Using the movement hole you would still have a slight bend which would bind with the jewel and cause friction which would affect your amplitude. But then again I may be wrong.

szbalogh Super WRT Addict

szbalogh

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1 minute ago, Cad101 said:

I don't think you would get a perfectly straight pivot by using its own jewel to straighten it because of the hole tolerance. As I could see the pivot straightener uses progressively smaller jewel holes to straighten the pivot. Using the movement hole you would still have a slight bend which would bind with the jewel and cause friction which would affect your amplitude. But then again I may be wrong.

 

13 minutes ago, bobm12 said:

In my book, nothing is heresy as long as it works and doesn't screw things up more! If the plan is good....go for it! I've never done it so let us know how you fared!

Cheers,

Bob

Did it with the Roskopf's escape wheel pinion. It is not jeweled just a hole in the brass plate. Now its barely visible and running great but You are right, its not perfect. And i think that there is maybe a chance that in a jeweled hole it can crack the jewel?

bobm12 Distinguished Member

bobm12

Posted
Posted
36 minutes ago, szbalogh said:

in a jeweled hole it can crack the jewel?

I was thinking this may happen too. There is always the pivot sizing tool I suppose, those that don't have jewels...would they work?

  • 2 weeks later...
ramrod Super WRT Addict

ramrod

Posted
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On 5/26/2016 at 7:28 AM, rogart63 said:

Have seen that somewhere. But where shall i look for something like that? 

what pivot are you straightening? what movement?

rogart63 Distinguished Member

rogart63

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Posted
2 hours ago, ramrod said:

what pivot are you straightening? what movement?

Haven't got any pivot right now that needs to be straighten. I saw a great blogg by a Swedish watchmaker and he used a tool for straighten a balance. Looked so cool i had to find out more about the tool. 

ramrod Super WRT Addict

ramrod

Posted
Posted

ah. got it. the reason i asked is that i won an auction on fleabay about a month ago and it is all parts - stems, some crowns and 95% pivots. tons of them. i couldn't use them in a lifetime. i'll give them away for anyone that needs them.

  • 3 years later...

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