Thanks Rhonda, here's a thread question I can look up or ask here or do a combination.
As I understand it, cotton threads do have a right/wrong way. So when you thread a needle, you want to leave the thread on the spool and not cut the thread first and thread from the cut end. It helps keep thread from tangling, all I know is I've always been bad at handwork and it used to be worse before I made sure to always thread as it comes from the spool.
Now this part I'm not so sure about, and that is you shouldn't use the spool rule on a bobbin because a bobbin is essentially backwards. It's ok with a machine because it's basically just going in a straight line but again will tangle more with hand sewing.
And then part 3, I'm thinking this is all about the nature of cotton fibers and how they are spun, so it wouldn't necessarily hold true with the trilobal, but I believe they are also spun, but more like microfibers than cotton.
There's always new stuff for me to learn about the greater world of textiles! I've only really been interested in thread for about the last 5 years, but I've got decades of experience with Dual Duty!