Learned to use sewing machine in 7th grade and teacher never mentioned about how to wind bobbin. Never really did get a chance to find out as there was only one machine in our classroom and I used it only once. When I was frist married my MIL gave me her old White machine, no manual so I just wound thread around bobbin and sometimes it worked and sometimes it didn't. I finally learned the 'proper' way to thread a bobbin when I bought my first Pfaff several years ago, that is to pull the thread through the hole in the bobbin. I have upgraded to a newer model and I think I should check out the manual to see if that still is the 'proper' way for my machine.