Beginners Guide to Using the Jacot Pivot Lathe
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- čas přidán 25. 05. 2023
- In Part 3 of the Hamilton 917 Project, I will show you how to get the most amplitude from the power train possible.
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PRODUCTS USED IN THIS VIDEO
► HOPPE'S No. 9 Lubricating Oil watchrepairtutorials.com/get/... (Amazon)
► Mitutoyo Digital Micrometer watchrepairtutorials.com/get/... (Amazon)
► Horotec Burnisher www.hswalsh.com/product/pivot...
MY MICROSCOPE SET-UP
► Amscope SM-3T watchrepairtutorials.com/get/... Amazon)
► Barlow Lens watchrepairtutorials.com/get/... (Amazon)
► LCD Ring Lite watchrepairtutorials.com/get/... (Amazon)
► Hayear Microscope Camera watchrepairtutorials.com/get/... (Amazon)
► Camera Adapter watchrepairtutorials.com/get/... (Amazon)
** FULL LIST OF TOOLS & SUPPLIES I USE **
watchrepairtutorials.com/tool... - Jak na to + styl
Such a great tip. If you come up against a problem, put everything carefully inside a little sealable bag and put it away. Many times you'll go back to it, equipped with better knowledge and tools and sort it. Nothing worse than finding an old project with parts missing
Hi Gerry,
Many people knew to watch servicing, immediately jump in to his old pocket watches thinking that they should be easy to get running again. Sometimes that’s the case, when you get lucky, but most often they can be extremely challenging. If you haven’t built up your tool set yet or the experience is not there yet. Hopefully they will take that tip and not ruin a piece of history. I’ll see you in the next one.
"In Watchmaking Everything maters"
so true Sir !!!
fantastic video !!!!!
You got that right Sonny!
The retractable ID clip idea is a genius idea!
Thank you. I can’t remember where I learned that but it’s not an original idea.
@watchrepairtutorials You're welcome.
I'm glad you shared it though. It's a great and convenient alternative to the bow.
That was nothing short of phenomenal. I am currently looking for a Jacot tool and now I know what I have to do to use one.
Being left handed might be a hindrance but I’m up for a try.
Not at all. You would just mount the Jacot tool opposite of the way I had it set up so that the carrier is on the left side of the tool. Then you just need to make sure that you’re burnisher is opposite of the one that I have. They sell them both ways.
I will tell you, though that it’s a good idea to practice on some old wheels first. 😜
Thanks for the instructions on how to restore a burnisher.
Glad to help Mr Skinner.👍
Your videos are phenomenal! I want to dip my toe in the world of watchmaking, but I'm already an expert in another field (or two!) - I must say that your patience in explaining the finer points of this arcane craft is amazing. Bravo!
What are your fields of expertise?
@@watchrepairtutorials Hi, violin making and previously vintage car repair. I've just got my first watch running, but it's running very fast. Thanks for your great videos!
@@chrisjohnson4165 violin making, now that is a skill. Wow.
@@watchrepairtutorials Thanks! I went to college as a mature student 32 years ago, and I haven't looked back - a very satisfying job, like yours I guess.
Just started my Watchmaker NOOB journey. Thank you for your expertise and videos. Very very helpful
I’m very happy you found my channel. Never hesitate to reach out if you need anything.-Alex
I've been waiting for this one! Great content
Perfect. I hope everything was clear and concise.
I am impressed again Sir!
You are explaining in such a detailed way that the beginner like I am can understand it.
Thank you my friend. Let me know if you have any questions.
Hi Alex! I live your videos! You are such a great teacher and I have learned quite a lot. Could you possibly do a video about refinishing cases and bracelets, as well as maybe a crystal video?
Sure thing! I have some video ideas in the pipeline
Great video. I always learn from you. Looking forward to your course. Thank you
Thank you Sir. And I hope the videos are helping you in someway.
An exceptional video. I found that prior to buying a proper watch cleaning machine. I really had to concentrate on getting the dirt out of the pinion gaps. I’ve also had issues with that teeth usually between the centre wheel and the third wheel
Hey JD, how’s it going? Yes those pinion teeth can be a problem spot, especially on those oldies.
Another awesome video! You go into such detail to make sure we understand. Looking forward to your 2yr program.
Thank you. I try to think of every possible question that one may have and answer it sometimes I miss things but that’s the goal.
Unbelievable Alex. You are either spying on me or reading my mind. Thanks for the VERY informative video. It has answered many recent questions I have had. With the exception of one. How polish tips of balance wheel pivots along with their effect on amplitude. You got me with this video (patreon) as I believe you provide a wealth of information and your willingness to share. Thank you again.
Oh, thank you John to pleasure to have you in our community. That’s a very insightful question.
I’m gonna be addressing this in a lot more detail in the video when I look for amplitude, and the escapement. And the short answer is that the ends of the balance staff can also be polished on the Jacot lathe, I just didn’t show it yet. There’s also a hand tool for rounding pivots that I’ll show you. And I believe version also makes a tool specifically for flattening staff pivots.
When you take a staff pivot and make it less round that increases the friction in the horizontal position when that pivot is sprinting on it’s end stone. It’s one method used for equalizing to horizontal positions.
Interestingly enough, flattening balance, staff pivots is also used to bring horizontal and vertical positions closer together.
Thank you for sharing you knowledge, I have learned a lot from you, Alex. Amazing video, I will be waiting the next one!
I appreciate that my friend.
Top quality content as always man
Thank you Patrick. More unique content coming down the road.
Another awesome video Alex. I just purchased a Jacot so this is a very timely video indeed.
Perfect, let me know if you have any questions
Another excellent video Alex and very timely as I'm battling with not just low amplitude but a variable amplitude on an old Seiko, which are not known for their high amplitude in the first place. Can't wait for the course and hope my old eyes last long enough to get through it.
I have a video in the queue that’s gonna be titled something along the lines of “ What makes Seiko run Better at low Amplitude.” I expect it to be eye-opening for many dedicated Seiko fans.
After watching this vid and getting a jacot for myself i set a task of doing an old pocket watch that was barley running . After discovering that the beds on my lathe wete slightly worn i had to go a few sizes smaller to get the burnisher to contact the pivot but then results happened its now running at 284 amplitude and only a slight change between positions . I think i have a poisong problem though as the beat error increses and decreses between dial up and down . Im stoked with learning the importance of pivots ,all made clear with a microscope (much to my amazment )
That’s fantastic, Peter. The Jacot lathe is definitely an investment but makes a huge difference if you’re working on older movements
Thanks for the awesome video
Thanks for watching!
Thank you very much, you don't realise how useful your videos are... and what's more, they're free. Thank you, thank you, thank you. I'm really looking forward to the jewels video.
My pleasure. I hope you can use this information.
Alex, what can I say, I’m almost speechless with this video. I kinda understood the need for clean, unbroken jewels and good, clean and polished pivots. You have taken me to a higher level of understanding and on top of that given me a so much better understanding of the Jacot and how to use it correctly. Thank you again for this and all you do, I have never seen or read a better tutorial on the Jacot tool.
Well, thank you Tom. A lot of thought went into presenting the Jacot lathe. What questions might come up so I hope I covered everything but we’ll see by the comments.
One thing that seem to confuse another fewer is when I was polishing the pivot, and you can see the cord and burnisher moving in the same direction. The way I set up the cord was so that when I pull on it, the barrel and wheel are actually turning towards me so when I push the Burnisher it’s moving in the opposite direction of the rotating pivot. I just wanna make sure that’s clear.
I am sure there are minor things that will come to you afterwards Alex. Having done training for people in the industry/skills that I had a lot of experience in I always found something that I could have put over better or added. That’s part of who we are, striving towards perfection constantly knowing we will never achieve it but can get close. I absolutely see in what you are attempting that is what you are aiming for. Your early videos were really good but you have got them to a much higher level now and I am really grateful for all you do.
Great descriptions in the video! Will check out the rest and then may subscribe if all the others are this good!
Welcome aboard!
Good morning Mr. Alex nice to see and hear you again
How are you my friend?
@@watchrepairtutorials It's good, although life can be unpredictable.
I am learning patiently gaining new skills also thanks to your videos for which I thank you.
THANKS
You’re welcome Greta
I also am adding my appreciation for your videos. So well done. The Timegrapher display that has the summary and visual representation of sound, is that a separate machine or something I can find on my 1900?
Thank you Norman. No I use the 1900 for quick bench checks. The other is the Etimer escapement analyzer
I knew it would happen, but did not expect it so soon. As a result of playing, watching and listening to you, I now feel I have a good understanding of what you are trying to attain by your tutorials. Even at this early stage of my watchmaking learning cycle, I am able to appreciate the knowledge of working at his level to gain amplitude. I can do most of what you say to do. Putting it into practice is so enjoyable. I'm looking at problems, understanding them and then applying remedies to my level. Thank you.
And here's the rub. I have understood the use of the Jacot Pivot lathe and its principle. However financially it is beyond me. Even the cheapest on ebay is a years savings. Ah well! I am however, interested in the distance learning course. Even though I am achieving so much with your video content, I would love to embark training with you. Not sure how the course would run out for me depending on your costing. You mentioned written work, My dyslexia may preclude me.
Looking forward to the next instalment of the amplitude saga.
Oh Ross, I appreciate your words as always. It gives me a great sense of accomplishment knowing that there are some to get what I’m trying to do.
The course will be reasonably priced so that I can cover the expenses in for Vimeo hosting, servers, etc.
It will be in the format as some people learn by reading, but there will also be video lectures as well as long and short videos to back up the written word as well, so no matter what your learning style is, I got you covered.
I appreciate your hanging out with me, as always, Alex
@@watchrepairtutorials Good man you are. I putting half my weekly spends away. Can't believe how good watchmaking is. Well, especially for me! Aged 75 tomorrow and having the mental ability to learn to repair watches is a boon. Spent time during the lockdown doing and learning various internet based computer courses. All passed to a good level, but to what end when achieved? Can't be employed at my age, and too late to set up work placed venue as cost precludes. Watch making achieves. Something in my hand, Something in my brain. Will never sell the product of my skills. Lots of friendly people out there in the forums, and also in subscribed CZcams sites like yours.
Regards, Ross.
Gained a new Sub, Thanks to you.
Perfect. Appreciate you being here.
Great vid Alex! I feel I say the same for each video because they are (a good broken record!)! I’m very interested to learn more about the learnings you spoke of. When you service a watch do you do all these processes in one go, or do you do as you have in this series, take it step at a time and go back to get the best amplitude? Obviously pegging is a must do, but do you burnish all pivots in all standard servicing? Looking forward to the next one!
When I service a movement, I do all the inspections that I have been covering during the disassembly. On newer movements I typically don’t burnish unless there is an obvious problem but always do it in pocketwatches. It’s always great to hear from Boyd. Thanks as always.
✨✨ Get Your Copy of my eBook, The Secrets for Adjusting Watch Rates ✨✨
➡➡PDF DOWNLOAD watchrepairtutorials.com/ebook/ ⬅⬅
➡➡Available on Kindle & Soft Cover @ geni.us/4x8C (Amazon)
✨✨Watchmaking Courses and Training ✨✨
➡➡ watchrepairtutorials.com/watchmaker-course/ ⬅⬅
Alex - Another great video. I would be interested in your guidance on lubrication types and impact on amplitude. I work on a lot of vintage Seiko and these movements depending on calibre tend to run at much lower amplitudes than say most Swiss movements I have worked on. I have worked on ETA 7750 and 2892 which if I recall callsl for HP1300 lubricant on most of the train wheel pivots but I would not dare use that viscosity lubricant on a vintage Seiko train as I fear and have seen much lower amplitude numbers so I tend to stay with a lighter 9010 or HP1000 in most instances. I know the old adage, low speed, high torque (HP1300), high speed, low torque (Moebius 9010). Have a good Memorial Day. John S
Thank you John and the same to you. I am by the coast and it looks like we’re going to get rain all weekend so people going to the beach are going to be bummed for sure.
Alex, great video! Question, as you burnish, are you running the burnisher against the rotation of the pivot or with the rotation? The video looks as though you are pulling/pushing the burnisher with the rotation of the pivot. Thanks again! John
It looks weird doesn’t it? The way I set the cord up makes the barrel rotate towards me as I pull the cord. As the barrel and wheel are rotating towards me, I’m pushing the burnisher in the opposite direction of the rotation.
So the burnisher and cord are moving in the same direction, but the pivot and burnisher are moving in opposite directions of each other.
Hi Alex, thanks for this and other highly informative videos, and the really helpful posts in forums. I read one great thread you created recently on lubrication. I have one question, do I need to prep my new Bergeon pivot burnisher in the same manner described here, as I've read in a forum question you answered that this is the burnisher you use exclusively.
For me the bergeon burnisher is too aggressive. I would imagine that what they’ve done is to try to strike a balance between the needs of a clock maker in the size pivots that they work on versus some of the smaller pivots inside a Mechanical watch movement, whether or not, you decide to dress it down like I did in the video is completely up to you depending on what you work on.
If the Jacot lathe you purchased works for you then go for it. I know some of the older ones could be a little problematic when carrying the wheels, but if all the pieces are there, it should be fine.
Good luck and let me know if you need any help with it. Also, would love to see a picture of the Lathe. If you have time to email it to me my addresses on the website or in the about me section here.
Great video as always. I was rewatching because I managed to get a great eBay find on a set of 7-8 burnishers. However, they need to be dressed. My purchase also came with a tin plate for polishing. Surprisingly heavy. It has a fine grey powder on it. Possibly diamantine? Any advice on dressing them with the tin plate? Thanks.
If you are asking about dressing a burnisher, I didn't in the video
Alex, I want to say Thank You for your videos! They are so useful. Have a question about wheels teeth cleaning- can I use fiberglass brush to clean the teeth? I do this way with dirty wheels. Is a fibreglass safe for teeth surface and geometry?
Yes, the fiberglass brushes are fine although I typically roll them through a little bit a rodico.
I just purchased a jacot lathe after watching your video, can’t wait to tey this out.
it seems theres a mistake on the slide at 21 :26, it should read 0.01 minimum and 0.05 max if i understand your explanations correctly.
Just two questions: how do you know a pivot needs burnishîng, and when do you know you burnished it enough and can stop?
Thanks Alex!
By very close inspection. In all cases with very old watches, pivots will have micro abrasion from running with dried oils and grit. One tell tale sign is when you get larger than normal drops in amplitude when going from horizontal to vertical positions.
Hoppe's is great as it won't mess up paint or finishes, has a surfactant and is very low viscosity. One can use a 0w16 oil for burnishing of steel gun parts but preferably one workout detergent which is impossible unless one orders direct from oil companies like Esso/exxonmobil, shell etc. they will sell you (a large amount) of pure 0 viscosity oil sans additives. Otherwise I always use hoppes or a 0w16-20 motor oil ymmw
Thanks for the confirmation. I guess great minds think a like.😀
Alex, wonderful video. Should the sharp edge of the burnished be polished so as to not scratch the shoulder. Sounds like the burnisher manufacturer let's the watchmaker put his final touches to it.?
I keep the sharp ind sharp, it’s not a problem. They are typically usable. I just like to control how aggressive they are so I redo mine.
I’ve now bought a Jacot tool so back again for another visit to this video.
My only disappointment is my set although complete is missing the prong thing that holds the spoke of the wheels. I guess I will have to make one somehow but not sure on length or shape.
I have plenty of small diameter silver steel so hoping I have a bar with the right diameter.
Any tips on replacing these Alex.
Thanks 🙏🏻
Shoot me an email and I’ll send you over pictures and the measurements from mine
If it is a Steiner/Horia, They still sell parts.
Brilliant video.. I just bought a Jacot tool hoping to polish some pivots on some pocket watch wheels which were 0.5 mm in diameter but my Jacot tool only goes up to 0.45 so the pivots won’t fit inside the centre tool. Is there a different Jacot tool to do pivots of 0.5 mm ?
I think most do. I have the Obama-Prazision and it goes up to 1.00 mm. I would sell it and get a different one.
Thanks for the video. I have a question about case polishing, do you use polishing machine or you do all of your polishing with pendant motor? Thanks
I primarily use a bench machine with felt wheels.
Wow ! I’ve had an old Swiss Jacot tool and a brand new Vallarbe file since 2019. Didn’t understand it enough to use. Could find nothing ‘ period’ on preparing the file. Best, if not the only, instruction I’ve seen on this subject. Many thanks. BTW I read that some pivots with lower quality materials can not stand up to the burnishing procedure?
That’s usually when someone says when they break one. You do have to be extremely careful and make sure everything is set up correctly. Because you’re applying force to the pivot, if it’s not flat in the bed, even a quality will break.
Good to know. Thanks for giving a starting point on this. I appreciate your videos and responses to so many questions that come your way. I’m signing up!
@@johntebeau4493 awesome. Let me know if you need anything.
Any recommendations to buy the jewel setting tool and the pinion polishing tool?
I’ve heard many good things about the Chinese version of the Horia tool for removing and setting jewels. I believe they’re available for under $300 US. the downside to the tool as far as I know is that there are no Reamers available to make any corrections on the Jewel Hole before inserting the new jewel. I use a Sietz Jeweler so if you can find a complete set, that would be my recommendation.
As far as polishing pinions showed using the toothpick and polishing paste and doing it by hand, or you could use any rotary tool with the silicone knife edge disc .
Great video! Maybe it is a silly question but I am going to ask anyway. Is Jacot tool only for pocket watches or it is usable for regular wrist watches as well? Than you
It’s suitable for any type of pivot from any type of watch.
@@watchrepairtutorials Thank you!
Alex! Been watching your vids for sometime now and they are the best. I have a problem and new some help. How would I contact you?
Thanks,
David
My emails on the about me page
Alex, if I’ve broken an incabloc spring on my omega 1120 caliber movement, what should my next course of action be?
I did a whole video of sourcing watch parts.
czcams.com/video/viq9-V1sv7M/video.html
This should help
Great information. Unfortunate that modern watches are simply replaced or wheels tossed for new ones. Vintage watch work is for real watchmakers only... 😊
For the most part like you’re correct as the majority of watchmakers working on movements with available parts can just replace them and that’s what they’ll typically do just because they have to turn and burn, especially if you’re working at a high-volume service center.
This is precisely why many watchmakers today either won’t work on pocket watches, or the cost to do this type of work blows people out of the water
What are your thoughts on the eve pin polisher that ive heard reed by several others?
They have their place, but they can't replicate what a burnisher does.
@@watchrepairtutorials that's kinda what I thought. They are probably ok but not as good?
@@brianwohlleben3182 burnishing works by stretching out the metal which fills in low spots which leaves a polished surface.
Doing it with an eve would be removing material, which is not ideal for side shake which can cause problems with how the balance runs.
@watchrepairtutorials ahh! So eve would be better for light rust or cleaning of an otherwise healthy pivot. But a worn piviot needs to be burnished.
@@brianwohlleben3182 well you have to be careful that you don't bend the pivot. I've used them for light polishing inside barrel arbor holes.
"Rust be gone" is good for rust removal folllowed by polishing.
Along with the details I always get a takeaway from your videos. This time - What matters in watch making? Everything.
Oh! And top work Steve.
I appreciate you watching the video and coming away with may be the most valuable lesson you can learn. Everything matters no matter how insignificant it may seem.
Excellent Alex! I've learned so much with every video. You rock!
Thank you and it’s always great to hear from you Mike. I hope all is well.