|Germán precisely adjusting the end mill to the winding stem.|
|Next step: Milling the square!|
|The old pendant movement and its components.|
Making of winding stems is a big part of the micro-mechanical module of our FullSkill course. It actually is one of the intermediate exams and the reason for that is that making a winding stem by hand is not an easy task at all and is an extremely good indication of your skills if you can make one. There are several different diameters that has to be precisely turned down, in many different lengths, and therefore several corners are to be made that have to be sharp. Then there is a square that is hand filed, plus thread making and also heat treatment operation which is always risky. Lastly, there is the slot. It takes weeks of practice and endless amount of patience to make your first winding stem (to acceptable quality and respecting the tolerances of course).
|Hand made winding stems by a FullSkill student.|
We wish Germán the best of luck in making his winding stem!