This clip shows to create threads on cylindrical surfaces.
This video is a part of the UNI2004 Mechanical Design course at Stord/Haugesund University College, in the fall semester of 2016.
The material for the course can be found here: https://drive.google.com/file/d/0B4tyQO6_jesMbnI4UHJDOF9ncmc/view?usp=sharing
The build-up, the actual race (starts at 2:11), and after reaction from Michael Johnson etc on this stunning stunning run!!!
Plus short trackside talk with the three medallists.