Friday, September 21, 2018

Timing (Aim for the Zero Delta)


Nothing really new going on this week. We keep doing timing related work, overall trouble shooting to improve timing (the ultimate goal is to achieve delta ZERO). Such as checking hairspring flatness and centering, regulating pins, making dynamic poising and checking balance staff condition (pivot straightness, general condition).

Henrik will have a trip to London next week, hope he has a safe trip and share us more pictures when he is back. :)

Timing data from Sif, something is going on within the hairspring.


Stan refresh the pivot.


Student interview. :P


Henrik is preparing the chronograph course for later.

Friday, September 14, 2018

Visitor From Voutilainen Workshop

Last weekend we had a visitor from Voutilainen. Antti, he is a Finish watchmaker who had been working for Mr. Voutilainen for ten years. He share us how they work in the atelier and how watchmakers collaborate with each other. From his sharing, we can feel how much work and detail they put into their watches. To improve the timing performance when the watch is in vertical position, they formed Grossmann curve around the collet for every watch. We know how delicate the work is, since we just finished our balance exam not long ago. After Antti's visiting, we hope someday we could also have a chance to visit Mr. Voultilainen's workshop one day.







We also share some of our cases which may affect timing result.

Stan finding a big burr swimming in the shock absorber.

CJ find the cap jewel was worn out in the center.
CJ accidentally catch the 4th wheel pinion with its pivot when handling the movement. Oops.
He made a special anvil and pusher to make the pinion straight again. To bend the pinion straight we heat up the anvil before the process. That's why the anvil is so big, it's for containing heat.


Following, please enjoy the beauty of the new movements for the school.










Special watch with thermometer.



School Watch from Le Locle watchmaking school.










Friday, September 7, 2018

Birthday, Visit, and Precision Timing.

This week was very interesting for us, last Saturday we made a trip to Mr. Simonin’s book and watch tool shop http://www.booksimonin.ch/ we were so lucky! he spent the whole day with us, we learned a lot of new things from his lifetime experience and knowledge, truly a living legend! As a bonus Henrik’s former WOSTEP teacher Paul Madden joined us and we got a rare picture of all three former WOSTEP teachers on the same picture.

Now when we have the hairspring exam behind us, we started to study and practice the art of precision timing, it feels we went somehow full circle as it is the final part of the basic program. Lots of analyzing and trial and error to get the most precision out of each calibre. 


Below; spotted at Mr. Simonin's shop, not only books!
A collection of old balance bridges at display.
He also sells old prints and student drawings, very beautiful!


Watchmaking tools!

CJ checking out a staking set.

Yi-Ting checking out some smoothing broaches.

Mr. Simonin also had some nice movements on display also for selling.
Beautiful chronograph movement.


Marine chronometer.

Many depthing tools, now you know where to get one!

Beautiful tourbillon model with detent escapement.

Three generations of former WOSTEP teachers caught in the same picture, Mr. Simonin to the right Who was Paul Maddens teacher (in the middle) who was Henrik's teacher, left.


Yi-Ting had her birthday this week.

Each student have their own ways with recording their timing experiments, this is the notes from CJ. Keeping a record of each adjustment gives a working timing history and the student has less risk of going around in circles trying to find where the problems are.

Friday, August 31, 2018

Hairspring Exam Week, Visitors and Trouble Shooting


 This week most of the time went to practice for the hairspring exam. We did have some time for other things as well; we had some very nice visitors all the way from the United States, Dean and Jacob who recently also took Henrik's restoration class a few month back in AWCI Harrison, Ohio.With them they also had a Swiss friend, Kilian who works here in Switzerland as a watchmaker. Also Vincent working as a teacher in HSNY http://hs-ny.org/ stopped by to see Henrik and meet the students, very nice visit as well!  We also had a very interesting case of a movement stopping after only running for a few hours, so we got to learn a way to troubleshoot and find where the problem may be, all in all we had a very interesting week!

This bent barrel tooth with a crack at the root was found to be the culprit. It can be clearly seen that it is leaning closer to the left neighboring tooth that the right one.
Kilian to the left, Dean in the center and Jacob on the right.
Students and watchmakers sharing ideas, how it should be!



Sharing contact details for maybe future collaborations.

Vincent came by for a visit and had also time to do a quick modification job on the jig boring machine.

This was another problem we had; suddenly the movement gained massively without it being knocking as sometimes happens when the escapement receives too much energy delivered from the mainspring and barrel through the gear train. No knocking! it took some time to actually find out what caused it but in the end it was clear; the hairspring body was ever so slightly bouncing on the stud in certain positions when the amplitude got high, it was an easy fix by correcting the centering of the hairspring, but hard to find.



Friday, August 24, 2018

Practice Exam Week

This week learned how to do the timing in order to complete the last part of our exam. And we also had our first and second practice exam during the week.

For this exam we need to put a complete balance together, including riveted with the staff, fit the roller and everything about the hairspring, we need to pin the hairspring with the collet and vibrating it to the correct length. And try to find the most efficient order for us to do this best during our exam.

learning how to read the timing machine and what that means need to have some basic theory background

Make the hairspring flat and centere around the collet is also very important in this exam

This exam have so many things to do, therefore the time management is very important.

using the jacot tool to correct the bend pivot if necessary

The first trial shows red for all position.
Another one that got better results.

Now it look pretty good, and it also shows this balance has a poise error. We will continue to practice and get closer timekeeping in the future.