Jump to content

Recommended Posts

Posted

Hi all,

After spending the last 10 years repairing pendulem clocks as a hobby,I've been ordered (by my better half) to start another hobby that doesn't envolve 'LOUD' clocks.

So I've turned my attention to pocket and vintage wrist watches.

I've serviced a couple of watches during the last month and brought them back to life,the most frustrating thing being screws as small as molecules, suddenly teleporting themselves to another dimension,never to be found again!

The balance assembly seems a nightmare waiting to happen,although I understand the basic principle of operation

I look forward to posting on the forum.

Dave.

Posted

    Dave;  welcome to a very interesting forum.  i am in vintage watches.   my Father  showed me "how to clean a clock mvt.",  "  wind it up,  remove the pendulem,  submerge it in a bucket of gasoline.  because of the lower surface  tention,  it would run down cleaning itself.   the clock experts here do it properly.   Vinn

Posted

Greetings from Cork! If you happen to be close by on this tiny island let me know if you ever need the lend of any tools

Sent from my Redmi 4X using Tapatalk

  • 2 months later...
Posted
On ‎11‎/‎20‎/‎2018 at 5:53 PM, vinn3 said:

    Dave;  welcome to a very interesting forum.  i am in vintage watches.   my Father  showed me "how to clean a clock mvt.",  "  wind it up,  remove the pendulem,  submerge it in a bucket of gasoline.  because of the lower surface  tention,  it would run down cleaning itself.   the clock experts here do it properly.   Vinn

I spent some of my early life in the north-east of England (industrial County Durham).  In the pub one evening, an old but still serving coal miner said to me (I have no idea how the topic came up) that it was time to 'boil the alarm clock' as it was becoming 'a bit unreliable'.  

I had no interest in clocks then, but I was startled to hear something so drastic and asked him to tell me more.  It seems they were in the habit of immersing their alarm clocks in a large pan of boiling water on the stove, leaving it a few minutes to clean out the dust 'and other gunk', and then drying it out above the fire. 

I've since thought he might have been pulling my leg but he seemed perfectly serious, and one or two other miners I raised this with afterwards were completely matter-of-fact in confirming it was quite a common thing to do.

In a similar vein, another seasoned drinker in that area once told me that, when first deciding in the 1930s the recipe for a very popular local beer (it's still around today), the brewers had put in 'a secret ingredient which gave the drinker a headache'.  "Why would they do that?" I asked.  The old boy looked at me as though I were a fool.  'Why man, everybody knaa's thoo hasn't been drinking a proper beer unless tha' weks up the following morning wi' a decent headache!'            

Posted

 welcome to the " fun forum" .   boiling a clock;  this has some historical military presidence.    after crawling around in the mud. your Webley could mucked up and cease to function.   without alcohol, to clean it up, boiling water. in the soup pot, was all we had and it worked even without deturgents.  "be happy in your work".   vin

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.

  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • You're asking a pretty broad question and you didn't specify the machine but yes it's simple especially if you have the right machine. The question has problems but I'll take it as it is. Is it really that simple yes especially if you have the right machine. So in the video below he's making a screw and yes it really is that simple but pay attention to the machine it is not simple at all probably wasn't cheap but it is small it will probably fit in your garage. Unfortunately wouldn't fit in my garage as it's far too cluttered up with things. In the video he talks about making a screw and pay attention to the machine. The machine has lots and lots and lots of cutters and lots of things to do lots of machining all-in-one machine conceivably one step after another all programmable. If you look at his channel lots of CNC's stuff and there are several other videos related to this machine. He goes to the factory where they talk about it and show all the other machines they make in Switzerland.  I did look up the specifications the machine I don't recall the price it's not going to cut wheels I think it has a maximum diameter around 11 mm basically it's really good for making small diameter watch parts. Then in one of the other videos he goes to a factory that used to make parts with waterpowered machinery been in business for 100 years and everything they now make is made with CNC machines including this one. What was interesting with the factory photo was that when they make some parts they can put them on a optical comparator comparator compares with whatever the reference is and the machine can be programmed to adjust its cutting to make sure everything is actually being made to specifications. Oh and then somewhere in all of this there was at least one picture of a balance staff can't have a CNC Swiss machine without making balance staffs.   It would be really nice if we had pictures of the machine. Then yes if you look at the page for wheel cutting you can enter parameters and it will generate a G code but he left out things? Notice he has a picture of a complete wheel but the G code isn't making a complete wheel it's only cutting the gear teeth I don't see whereas the program for crossing out the spokes? Typically when you see people cutting gears once the teeth are cut most the time the spokes are cut by hand. Occasionally someone will mill them out but typically not with the program which seems strange if you have CNC capability for instance one of my friends fill it used to design assembly line equipment or things to make things. So his hobby was to continue to make tools to make things like clocks. Very interesting and clever clocks but his true fund was making the machines to make the clocks. Then machine is not controlled by G code like we would typically find today as the stepping motor controller he has was made a long time ago and the individual controllers used a textbased program. So the company had a editor you could write a program to cause each the stepping motors to do something. So basically once you figure out how to cut a gear he would just change the parameters for different size gears so here's an example of a gear as you can see we have the teeth and the spokes. Then we have a picture the machine which sucks because it would've been so much nicer if I could've taken a picture when it was cutting a gears so we can see things better. Then yes there is a worm gear stepping motor indexing this is a mini lathe and the indexing is at the end of the lathe head hiding. The basic operation of this machine would be brass sheet not cut to a specific diameter size not even round mounted on the machine. Then it turns and a milling cutter will cut the diameter. Then the gear would be cut with a gear cutter. The same mill cutter for the diameter although conceivably change the size I don't know but basically the same milling for cutting the outer diameter would be used to cut the spokes. I really can't remember how he did the center hole but whatever it was was very precise.          
    • Yeah I know the site and the creator of it.  the two video clips are good examples of the quicker method and a full tear down.  the quick method will work in many cases. But not always and not for all the different movements.  I strongly suggest to not bend the four tabs as was done in the first clip.  Instead there are three tabs that insert into the top plate, Much saver way as to not break a tab.
    • I found a motor that is 3/4 hp and another that is 1.2hp. They come with speed controller. So I don’t think I would need a wiring diagram. But I sure appreciate you offering your help! Do you think 1.2 hp would be too much for a watchmaker’s lathe?
    • At the moment I have neither EDTA solution nor Evaporust, so I tried with a citric acid solution. This gave satisfying results for most of the parts, except for the ones that are really heavily corroded. I will see whether I can acquire one EDTA or Evaporust and try that next.
    • This guy (Minimachining) has a playlist of him setting up and using various attachments on his Sherline lathe.   I know nothing about CNC machines but had a question about making screws. Watchguy.uk has a section on his website where it allows you to enter parameters for screws and wheels and then 'generate code'. Is it as simple as that sounds, can you 'tell' the CNC machine to cut you a screw (or stem) by giving it the code for a particular screw or stem and it happily makes one for you?
×
×
  • Create New...