I've done this and I use a curved needle like an upholstery needle. I also do it on a cutting mat so not to damage the surface I'm working on.
Originally Posted by
Kitsie
I use crochet cotton and have never had it "fail" after many washes. I use a "surgeon's" knot. Liking the look, mine are tied on the "front".
Here's a video of the knot. (I do the first "yarn over" once and the second one twice.)
https://www.youtube.com/watch?v=PeaIyAyg_cs