How do I join polyester tubular yarn skeins together?
So, in the meantime, I'm trying something a bit different... It's not the neatest sewing job, but I've managed to sew the strands together, doing a basic up and down through the middle (with the strands overlapping each other) and then looping over and under each side to hold it together on the sides as well. At least this way, there's no big knot and it feels pretty sturdy. ‍♀️


Here's one side of what it looks like worked in with a few rows done extra...

 
And here's the other side of the work. Maybe in future, I will sew together a smaller section and snip the excess, as even though the bit I sewed was only about 1cm, it's still a bit noticeable... Though probably still less so than if it was knotted. I'll try to do maybe half a cm next time (tricky!) and if I succeed, I will post back again! In the meantime, if anyone else has any other suggestions, I will gladly receive them! =)