Use it when you use thick CA for faster cure. Don't use it on thin CA or if you do, be really carefull and use eye protection. It pops once in a while and makes a mess. Bubbles and is hard to clean or sand.

I use a ton of it with thick CA. Thats about all I build with. I go back and put a filet of white glue on bulkheads and rib to spar joints on power planes to make sure the joint is strong. Gliders, I just build with CA.