Andy Paiko Glass
7 of 88
The respective diameters of the bobbin pulley groove and the grooves on the flyer whorl determine the number of twists per inch going into the yarn... Since the bobbin is spinning faster (smaller diameter), than the flyer(whorl), the yarn is wound/spooled/drawn onto it from the flyer arms, which spin around it... seems simple, right? Leonardo was the first to draw up plans for such a device, but spinning wheels in one form or another have been around about as long as glassblowing... 4000 years.