Thanks for the note of caution BHT- I need to be careful, it is something I wouldn't attempt with students.
I don't think the mask being worn offers enough protection, I will check this out.
The main drawback as I see it is cost- CA adhesive being an expensive medium to spray. I have often wanted to coat small objects other than pens with this finish - applying CA with an air brush didn't enter my head, I feel I could be missing out by not trying this.
Haggy