Cleaning direct seconds extended pivot post

[ifibrin]

What is considered best practice for cleaning the direct seconds pivot post (i.e. fourth wheel steel pivot post on main plate) in movements such as the ETA 2824-2? You can’t peg out the entire pivot post with peg wood, and using rodico through it will likely leave stuff stuck in it.

[JohnC]

You can push it into pithwood. It's much softer than pegwood and should get the gunk off. It's great stuff to have around - also good for cleaning oilers.

[ifibrin]

18 minutes ago, JohnC said:

You can push it into pithwood. It's much softer than pegwood and should get the gunk off. It's great stuff to have around - also good for cleaning oilers.

Do you mean pushing the hollow steel post on the main plate into the pith wood? I’m referring to the hollow pivot post attached to the main plate, not the fourth wheel itself.

Edited October 5, 2021 by ifibrin

[Nucejoe]

 I think you are talking about the center tube.

I run a piece of sewing thread through the tube( like a foot long thread) , pour some lighter fluid on the thread.

Make sure you wont dislodge the tube.

[clockboy]

Not sure what part is being referred too here but find attached the pdf with a guide to the lubricants etc.

 

http://horotec.ch/file/TECH_ETA.2824-2.pdf

[ifibrin]

I was referring to this part:

[JohnC]

Oh yeah sorry I misread your original question. You could probably push that into pith too. I don't think you need to peg out the entire tube as it should not be lubricated except for a jewel, which hopefully is close enough to the bottom to reach with pegwood? If it's supposed to be dry except for the jewel I would probably not worry that much.

Edited October 5, 2021 by JohnC

[ifibrin]

The movements with direct seconds via the metal tube in the middle on the main plate, such as the 2824-2, don’t have a jewel on the main plate for the fourth wheel. Only the train bridge has a jewel for the fourth wheel.

[HectorLooi]

Actually there is a jewel in the centre tube. If you look through the tube into a bright light, you can see the jewel.

I usually clean the centre tube with lighter fluid and ream the hole out with a dental paper point.  

https://a.aliexpress.com/_mKDi4fG

 

 

[Nucejoe]

10 minutes ago, HectorLooi said:

Actually there is a jewel in the centre tube. If you look through the tube into a bright light, you can see the jewel.

I usually clean the centre tube with lighter fluid and ream the hole out with a dental paper point.  

https://a.aliexpress.com/_mKDi4fG

 

 

Hi hector,  aren't you cheating?    it says "for dental use only" right on the package. lol 

 On the serious side though, I wonder if dental paper works for pegging all jewels?  I have had no joy when it come to pegging.

Regs

[ifibrin]

5 minutes ago, Nucejoe said:

Hi hector,  aren't you cheating?    it says "for dental use only" right on the package. lol 

 On the serious side though, I wonder if dental paper works for pegging all jewels?  I have had no joy when it come to pegging.

Regs

I find that pegging jewels works best with the really thick peg wood, but you end up wasting a lot of it by shaving it off… I find that sharpening an already sharp toothpick with a scalpel works very well for pegging tiny jewel holes, but it strongly depends on the quality of toothpicks you have available.

[HectorLooi]

6 hours ago, Nucejoe said:

On the serious side though, I wonder if dental paper works for pegging all jewels?  I have had no joy when it come to pegging.

I hate pegging jewels too. Especially when the quality of the pegwood is lousy. Sharpening pegwood is a real pain. I wish someone would invent a pegwood sharpener.

Paper points goes limp when it gets wet, so it isn't going to work for pegging. How did the idea of flossing the jewel hole with dog hair work out?

I'm still searching for an easier way to clean out jewel holes. Sometimes really gummed up jewels can come out of the ultrasonic cleaner still dirty. And the only way to get the gum off is to peg it.

I'm also looking for a way to hold shock jewels to peg out the hole. There must be some tool out there for this.

Anyone out there got solutions! 

[ifibrin]

3 hours ago, HectorLooi said:

I hate pegging jewels too. Especially when the quality of the pegwood is lousy. Sharpening pegwood is a real pain. I wish someone would invent a pegwood sharpener.

Paper points goes limp when it gets wet, so it isn't going to work for pegging. How did the idea of flossing the jewel hole with dog hair work out?

I'm still searching for an easier way to clean out jewel holes. Sometimes really gummed up jewels can come out of the ultrasonic cleaner still dirty. And the only way to get the gum off is to peg it.

I'm also looking for a way to hold shock jewels to peg out the hole. There must be some tool out there for this.

Anyone out there got solutions! 

I’ve never actually pegged the hole jewels for the balance wheel. I just place them in the ultrasonic machine for a really long time. 
I find it easier to sharpen an already sharp toothpick to a point sharp enough to peg pallet fork pivots. An exacto brand scalpel is invaluable for this. If your blade isn’t sharp enough it won’t work. You can achieve a point sharp enough if you use the thick Bergeon pegwood, but you use a lot of wood to sharpen the point, so maybe at least one cm length of pegwood per jewel.

[jdm]

5 hours ago, ifibrin said:

I just place them in the ultrasonic machine for a really long time. 

I had an U/S cleaner which transducer failed after possibly too many "long times". On the other hand this stuff also fails without apparent reason. I think a good way is to look at any part under high magnification. If something is dirty then insist cleaning, otherwise move on. In other words, no obsessive, pointless cleaning.

[Klassiker]

On 10/6/2021 at 12:50 AM, HectorLooi said:

How did the idea of flossing the jewel hole with dog hair work out?

It's not an idea, it's a tried and tested technique! 

How any one can practice watchmaking without a dog in their toolkit is beyond me.

[HectorLooi]

28 minutes ago, Klassiker said:

It's not an idea, it's a tried and tested technique! 

How any one can practice watchmaking without a dog in their toolkit is beyond me.

Which part of the dog yields the best hair for watchmaking?

[AndyHull]

2 hours ago, HectorLooi said:

Which part of the dog yields the best hair for watchmaking?

I don't know, but would the best dog to have be a pointer or a springer?
(I'll get my coat)....

[luiazazrambo]

As far as I know we need a pig as well.

[HectorLooi]

1 hour ago, AndyHull said:

I don't know, but would the best dog to have be a pointer or a springer?
(I'll get my coat)....

I see.... so it doesn't need to be Swiss?

[watchweasol]

The use of animal hair goes back a long way. Before the invention of the balance spring The balance spring was essentially a hogs hair / Pig bristle which supplied the impetus for the balance and so powering the verge.

I have used and still do an old shaving brush (badger hair) for the self same purpose its very good. Finding an old type brush may be a problem these days .

[Klassiker]

Well off-topic now (apologies to the OP) but human hair is still in use today in Moritz Grossmann movements.

[watchweasol]

I haven't enough hair to donate to cleaning jewels, just enough to keep the cold out.