Tool for straightening pivots?

[rogart63]

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

[Cad101]

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.

[rogart63]

35 minutes ago, Cad101 said:

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.

That would be no surprise? Seitz shall have a look? Exactly but this was obsolete at cousinsuk.https://www.cousinsuk.com/product/balance-staff-pivot-straightening-tool 

Edited May 26, 2016 by rogart63

[Cad101]

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

[szbalogh]

Is it heresy to straighten in its own hole? 

 

[bobm12]

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]

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]

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]

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?

[oldhippy]

This is on ebay.

http://www.ebay.co.uk/itm/SEITZ-vintage-watchmakers-horology-tool-for-straightening-pivots-no-30350-/322117535618?hash=item4affb38782:g:6fQAAOSwQjZXQZ6w

[szbalogh]

It could also be used as a pivot gauge  

I was thinking that this type of gauge is so simple that maybe i could make one.

[ramrod]

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]

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]

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.

[vlada]

Are these in any sort of order? Can you look if you have a pivot for a 19.73N Longines?