When I tried to make a simple Tunisian crochet scarf using the "Tunisian Simple Stitch", the edges of my scarf kept curling.
Is there a way to prevent that while crocheting and is there a way to fix that on a finished product?
The main issue with Tunisian crochet is that, since you don't turn your work, all your tension will be distributed on the same side of your project, with nothing to "balance" it and prevent the curl. Apart from blocking, all the methods suggested to reduce the curl are actually methods to reduce the tension.
There are a lot of blog articles and videos dedicated to that topic, including this pretty useful review from Holly's Crafty Shoebox . From what I've gathered, you should try to:
You might want to combine several of these tips for increased efficiency. The woman in the video by instance suggestes combining a bigger hook and working a few Tunisian purl stitch rows at the beginning and end of your project. Let us know if that worked for you!