I wonder if you stitchers out there have similar "thread lore" that you've been told or have tested
So, a piece of lovely Ed Mar rayon in purple and pink - not being tested on this fabric, that already belongs to a cushion, but at the edge of something.
I've threaded each end, and will cut and stitch to see how each behaves.
Same needle, same bit of fabric,
and quite a squiggly wiggle on the right
though subsequent stitches didn't behave the same way, however
the red thread, coming from the left, has untwisted quite a lot at the end, compared to the purple one
and look at how that stem stitch sits in opposite directions, though placed into the fabric in exactly the same way. The purple thread, which squiggled but didn't unravel sits above the line, the red, which squiggled less, sits below. Food for thought.
I am intrigued ...