Friday, June 14, 2019

Vintage Chronograph Valjoux 22/23 Chronograph Course

WEEK 10: EVERYONE IS AWAY 😆

Harman left to meet with his parents in Sweden! Markus also left to attend a wedding. In the meantime, the workshop was bustling with activity as Jack from AWCI came for the Chronograph course.


Harman Wadhwa 
Origin : New Delhi, India
Age : 28
Watchmaking class : Not available 

Pierre Aubert
Origin : Toulouse, France
Age : 22



Watchmaking class : 2Y Fullskill Program
Current mood: I had such a great week!! I spent the week working on my tools during school time and have really pushed the hours after school to make progress on my school watch! For clarity purposes I will let you have a look at the pictures and their respective description down below! It should be easier to understand the process :) Again, if you have any questions do not hesitate to ask them!! Have a great week-end and see you next week!

Markus Mc Donald
Origin : Stockholm, Sweden
Age: 20

STEP 1: SCHOOL WATCH 

I finished filing the Yoke last Sunday, it is now fully functional: it allows smooth setting action and winding. I will bring its spring to final dimensions later. In fact, I have dedicated this week to the making of my setting lever spring (or jumper for Jack 😉). The first step was to design the spring according to the travel of the setting lever in between the setting and winding positions (inherently determined by the shape-size of my Yoke!). 


 Once I figured out the appropriate design, I prepared my sequence of operations for using the Jig Borer! And that is when the fun start 😆


In fact, I had to start over three times: 
#1 The drill broke halfway through the process, rendering the piece useless. (Bottom right in the picture above)
#2 Everything went well except that I messed up my milling operation calculations at the last minute 😂 and was left with a full hole rather than a nicely milled area around my previously drilled hole(Bottom right)
#3 Finally got there!! 😎 (Bottom left). It is actually a lot of fun to go through all these mistakes..!! Why? I simply LEARN A LOT..!! and I really enjoy improving the way I do things every time I have to re-do them!! Next step: sawing my piece out of the steel plate. 



After I sawed it, I hardened it and tempered it. It was now ready for grinding! The goal: use a lathe on which is mounted a diamond cutting wheel to grind a rather rough piece, and bring it closer to its final dimensions.


The peg wood sticks allowed me to precisely move the spring into the wheel in order to remove material. I will now use diamond files to give it its final shape and make it functional! 

HENRIK'S WORDS
This week was very fun and motivating, Jack from the United States came over for a specialized course on the Vintage Chronograph. We went through all the theory and analyzing of the function as well as made a functioning hammer for one of the Valjoux 22 movements, we also had time to modify a screwdriver to be extra short so that Jack can adjust the eccentric's directly in the microscope as well as making a column wheel key to be able to check the timing of all the levers operating with the column wheel, below I put some highlights form the course, not in any particular order. Pierre did very well and progressed on his school watch with his setting lever spring, Harman had time to do one more practice exam before he went a short stint over to Sweden, Markus continued working on his tools until he also left on Friday to attend a marriage. Have to run now, but see you next week and have a great weekend!!

Column wheel key.

Hardening column wheel key.

Broken screwdriver.

Modifying broken screwdriver in lathe.


Extra short screwdriver.
Jack milling a hammer for the Valjoux 22 in the pantograph.
Jack working on the Pantograph milling out the hammer.

Jack and Henrik at the pantograph
















Beveling the hammer.

Tapping the tube hole and screw hole of the hammer.

Drawing the milling path.

Hammer being tested in the movement

Friday, June 7, 2019

Summer Arrived In Le Locle!

WEEK 9:

Harman Wadhwa 
Origin : New Delhi, India
Age : 28
Watchmaking class : 8 month Service & Technician course
Current mood : This week was better than expected, I had my first intermediate exam which went pretty well 😁💃. In coming days I have to keep practicing for my final gear train exam which is on 21st of June, so till then will be finishing my exercises on barrels and gear train.



Pierre Aubert
Origin : Toulouse, France
Age : 22
Watchmaking class : 2Y Fullskill Program
Current mood: Very Exciting week!! Most of my school time was dedicated to modifying my files so that I can file the appropriate and desired sharp angles required for a few tools. I love grinding on the lathe haha!! It is very satisfying. 
 As for my after school time 😎, a lot has happened. Or at least from my perspective 😆. I finished preparing my Yoke design and the required sequence of operations to make it on the Jig Borer. It has come out very nicely 😉!! I will let you see the pictures (STEP 3 onward) and read the step by step description!! Feel free to ask any questions about the process!! I would be happy to share watchmaking experiences! Have a great weekend and see you next week!!

Markus Mc Donald
Origin : Stockholm, Sweden
Age: 20
STEP 1: HARMAN's TEST EXAM

Harman to the wheels:  why you are so complicated?

Bought these goodies from Herrli.






Interesting Franco Indian merger 

What to invest on? Harman's confusion at its apogee 😝

Sunny day in Biel/Bienne

STEP 3: MARKUS & THE LATHE 


STEP 3: 
PIERRE SCHOOL's WATCH => GETTING AHEAD WITH THE YOKE

Jig Boring Sequence of operations! 

 Setting up my work


It is actually coming out nicely and along the lines of my initial design! 

 Sawing a rough shape of the yoke for grinding operations. Grinding on the lathe has then allowed me to remove the bulk material and get closer to the required shape. Final adjustments are made by hand filing!

After a day of filing 😍 => The Yoke is fitting nicely on the main plate. The next step is hardening the Yoke before I bring it to final dimensions. Why? As I decided to combine the Yoke and its spring into one piece, I have a very thin section that can easily bend. I don't want it to snap. Hardening and tempering it will prevent this, and will allow me to file the spring section afterwards. Then, I will refine my angles and start beveling it!

 Hardening => Such a fascinating process!!! There is so much science involved in it..!! I loved it. 

 Tempering

HENRIK'S WORDS
What a lovely diverse week and hot! The summer finally came! we were melting on Tuesday as we were not yet used to such high temperatures! Harman was very busy getting ready for his first practice exam on the gear train, which went well. Pierre continuing on his school watch project and tool making, which is going faster than what I expected, and Markus got introduced to the Schaublin 70 watchmakers lathe, and finally we all ended the week together practicing heat treating steel. As I have been too busy preparing and teaching courses this week I got no time with my sapphire project, but will notify the next time I get a chance making something for it. As I was in a hurry last week I did not get the time to show all the pictures of Francesco's Restoration II course, so I put some more below, see you next week and have a great weekend!!

Rhodium plating watch parts


Practicing making and polishing screw chamfer's

Practicing circular graining and bluing.

Friday, May 31, 2019

Restoration Course II

WEEK 7:

Harman Wadhwa 
Origin : New Delhi, India
Age : 28
Watchmaking class : 8 month Service & Technician course
Current mood : Practicing end-shake and side-shake on barrels. I also covered the notion of division (relative height between meshing wheels) and end-shake of the gear train on 7 different movements. 

Pierre Aubert
Origin : Toulouse, France
Age : 22
Watchmaking class : 2Y Fullskill Program
Current mood: Tough week. First exam: Filing with time constraints is very different from my daily filing operations..! It felt I had to rush towards the end result, which I never do. In fact I just love the process so much (every stroke is enjoyable) that I usually only focus on the quality regardless of the time it takes. I like to think of quality to be my only deadline. As G.Daniels said, everything will be done "All in good time". However, this was also a great and essential experience on two levels: 
1- It allowed me to discover and experience new filing strategies. 
2- Gave me extra confidence in my abilities to deliver good quality filing when under time pressure. 
Last but not least, I started to prepare the required sequence of operations for my setting mechanism => more on that next week. See you next week! And please, feel free to share your feedback and questions :)! We will be very happy to help!

Markus Mc Donald
Origin : Stockholm, Sweden
Age: 20
STEP 1: NEW STUDENT 


STEP 2: IN THE ZONE 💪

STEP 2: HARMAN - GEAR TRAIN DIVISION 


STEP 3: RESTORATION COURSE


Francesco preparing wheel to be milled














HENRIK'S WORDS
This week was even more busy for me than the last one, but also very fun as I had to teach a new student, Francesco, he took the restoration II which have gears and hairspings for restoration in it and he also wanted to learn some finishing techniques, above some random pictures from the course, if i get the time next friday i will add some more pictures and describe what we covered. Have to run now, but see you next week and have a great weekend!!