Sometimes I will use the thread on a bobbin to do handwork, rather than a spool, and it never occurred to me that when doing that I needed to knot the opposite way because the thread on the bobbin is wound on there the reverse of the spool. I was constantly getting knots. Someone on here mentioned the need to knot the loose (not freshly cut) end of the thread when working off a bobbin. Duh! Now I no longer have such problems. As long as I remember right away when I start....