|Kai shows the students how to draw gear teeth on Inventor|
|Kai drawing the teeth profiles using simple calculations|
Henrik also gave a bonus lesson on another finishing technique used for making the sun-ray pattern last Sunday. Using a special setup on the 70 lathe with the milling attachment they were able to produce perfectly centered sun-ray patterns.
What often happens in watchmaking is that watchmakers drop tiny components all the time. Theren dropped his balance staff and everyone helped in looking for it. With the team effort, Theren was able to retrieve his lost balance staff.
|Team effort in finding Theren's dropped balance staff|
This past Saturday Henrik took the students to a flea market in Fribourg called the Retro Technica. It was filled with cool machining tools, radios, vintage video games and many many watchmaking tools, including collets, drills, taps, lathes, and many other tools. It is a great place to get bargain deals on used tools for watchmakers.
|2nd hand lathe at the flea market|
|vintage jacot tool|
|a plethora of drills, gravers, and other goodies|