DELTA 1

  WEEK 110

Willy, Yuriy, Alex, Michael

Origin : Singapore, Canada, Taiwan, Malaysia 

Watchmaking class: Technician & Fullskill 

Current mood: Alex and Michael did very well in their real hairspring exam this week! All of us had a chronograph demonstration regarding how to fix the chronograph column function, understanding the mechanism and solve problems or errors in any possible scenarios. It was an interesting week. All the best to Yuriy and Willy for their technician final exams next week. By the way, we are going to Herrli again this weekend.

Renato & David

Origin: Zug, Zürich, Switzerland

Watchmaking class: Fullskill

Current mood: David worked on the press fit test piece and produced several pieces to find the right tolerance for the perfect fit. Then he started working on the actual press fit tool. I spent several days on practicing hand cutting the female cones (also one of the press fit pieces) on the lathe. Tried all kinds of techniques. Doing the depth at first, then remove other material. Doing the cone first, then go to right depth. Using different cutters, one for clockwise, the other for counter-clockwise rotation cutting. At the end, getting the center pointy and precise, without male cone and scratches, is the hardest and most time consuming part. Figured it out eventually, but basically it is still somewhat tricky. Using the straight cutter side to have the cone sides straight is recommended. Also the quality of the cone can be judged by the light reflected in it. Should be a fine continuous line going straight and sharp to the center. Nice job and routine this was, that can be used elsewhere when hand cutting!   

Name: Markus McDonald.
Origin: Stockholm, Sweden. 
Course: 2 years full skill course.
Current mode: This week I worked on a number of different things adjusting and timing of the 7750, making alterations and  dynamic poising. Additionally I also worked on the chinese chronograph which although was lacking in good material was very classically built making it perfect for adjustmemts to learn the foundamentals of the chronograph. 

These went well and I was able to learn a lot and make improvments with the work in preperation for next week.

STEP 1:  DELTA 1! (MICHAEL) 

On Saturday after some more tweaking Michael beat his own record and got 1 second delta! Very well done!

STEP 2:  BOOKS! (RENATO) 

Very good book for research purpose primarily about Arnold and Frodsham.

Very high quality photos!

Interesting!

HENRIK's WORDS:

Still raining! Similar to last week. The weeks for me are getting even busier as we are getting closer to the technician final examinations, sort of grinding work! other than that nothing really new except for checking of the timing of the different levers interacting with the column wheel. Alex and Michael have completed their hairspring and timing course both passing the exam! Yuriy, David and Renato went to Mr. Simonin to pick up some books. Tomorrow we will once again visit Herrli that will be fun again as I also need to stock up on some watch material! I am also eagerly awaiting an interesting calibre that I got all the way from Florida! All in all not so special week but soon some to come! Have a great weekend everyone!