I’ve used CA to secure the knot on my Angel Hair strings, but I’ve also had success with carefully melting the knot with a lighter and pinching it together. You just have to make sure you don’t melt the string on the playing side.
I tried this method once, and it didn’t seem to stay snug, but maybe I didn’t put the twist back in, or I needed to flip it like you suggested. I may give it another try. I’ve been using the Finch Head Knot, but that can get really tight.
One other tip, if you want to accelerate CA, but want a non-toxic alternative, is to use a pinch of baking soda on the wet CA.
Thanks for taking the time to post this, Dust!