I hope someone sees this since it has been a year since anyone posted.
I have read the entire thread and most of it is talking about preventing the curling while you are knitting it. There are a few mentions of fixing it afterwards but I am still a bit confused.
I made a "scarf"--not really intending it to be a scarf it was just for me to practice knit and purl and get a rhythm and start to build the muscle memory so I know what I am doing! It was great practice and now my daughter really wants the scarf-- I used cheap tacky acrylic yarn so of course she loves it! I would like to fix the curl along the sides though. I don't mind the curl on the ends, it is actually kind of cute.
So I see my options appear to be to knit or crochet a border. I don't know how to crochet (that is on my bucket list though!) and am not convinced a knit border is going to work? I would like to make a seed stitch edge, I need to practice alternating k and p anyway!
It would seem that since the yarn isn't actually attached to the stockinette yarn it won't have enough "pull" to work. Also I am not completely clear how I am supposed to add this border? Do treat each row going up as separate and start new for each one? If it makes any difference I slipped the first stitch of each row.
Is there anyway to make a border that goes vertically (along the long sides) that might work?