'Wind Knitting Factory' is a wind-powered knitting machine. The blades embrace more than a meter in diameter, and the wind caught by them powers the machine. In this way it is possible to knit a long scarf. When it is windy the machine knits fast and with less wind, the machine knits slowly. Occasionally the knitwear gets 'harvested' and transformed into scarves. Every scarf gets a label that tells you the date and time on which the wind made it. This mobile wind factory illustrates a production process and it visualises what you can produce with the present urban wind.