Jump to content

Poising Balance And Redusing Weight

Georgef2

By Georgef2
in Tools & Equipment

 Share

Recommended Posts

JohnR725 Distinguished Member

JohnR725

Posted
Posted

For the balance wheel that does not have screws the drill in the picture is a circuit board drill. Basically is just a carbide drill. Just do a search on eBay for pcb drill and quite a few come up.

 

http://www.amazon.com/10Pcs-Print-Circuit-Board-Carbide/dp/B00IMXHXGG

 

Then for watches with screws the preferred method is  undercutting to reduce the weight. The PDF below shows one version of the tool explains how it's used. Then the next link is another version of the tool that's more common. The Elgin tool I don't think I've ever seen a cutter like that but a nice picture of what you're trying to get.

 

http://www.nawcc-index.net/Articles/Elgin_bulletin_balance_poising.pdf

 

http://callmedutch.com/Horo/viewitem.php?productid=14

 

The title is incorrect it's not an under Cutter. If you look at the pictures it's a drill will put a little hole in the center the screw. Not the preferred method because it's visually obvious that it's been done especially assemblies extreme about it.

 

http://www.ebay.com/itm/K-D-NOS-Balance-Screw-Under-Cutter-Tool-Set-Baguette-to-18-Size-Watchmakers-/351303193833

 

 

 

 

 

Link to comment
Share on other sites
JohnR725 Distinguished Member

JohnR725

Posted
Posted

It would've been nice to see more pictures of this tool? Then link below shows a earlier version of I think the same tool sort of. Earlier version for just holding the balance wheel fancy version looks like it's actually holds the drill Then on the simple version I've seen another variation of it where there's a arm that comes up holds the balance wheel versus a person's finger.

 

http://www.ebay.com/itm/EUC-Swiss-made-Bergeon-30203-Nickelled-Tool-for-Filing-Balance-Screws-Orig-Box-/111613573273?nma=true&si=l32Ku7inr5TrRvAzlL%252BvTzf7Mf4%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

Link to comment
Share on other sites
rogart63 Distinguished Member

rogart63

Posted
Posted (edited)

It would've been nice to see more pictures of this tool? Then link below shows a earlier version of I think the same tool sort of. Earlier version for just holding the balance wheel fancy version looks like it's actually holds the drill Then on the simple version I've seen another variation of it where there's a arm that comes up holds the balance wheel versus a person's finger.

 

http://www.ebay.com/itm/EUC-Swiss-made-Bergeon-30203-Nickelled-Tool-for-Filing-Balance-Screws-Orig-Box-/111613573273?nma=true&si=l32Ku7inr5TrRvAzlL%252BvTzf7Mf4%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

Only found a picture of it on google search . But there must be more info on the net. Maybe on  Bergeon site?

One thing for sure? It ain't going to be cheap. 

Edited by rogart63
Link to comment
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.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  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.

×
 Share
Go to topic listing


×
×
  • Create New...