Gap filling
You didn't mention it, but the baking soda also serves as a type of catalyst, the CA pops really fast! A little smoke, too, if you are susceptible to fumes, you might try something else, though...
I use it on almost all my joints while I am building - put a pinch of baking soda in the corner of the joint, thin CA it, and it forms it's own little fillet. Very strong, very minimal weight gain...
Done it for years, have NEVER had a plane fail in the air! (knock on wood!)