i am about to start in the powder world. i have a couple questions for the people doing the work out there. first what is the faraday cage effect i have read about and how does it pertain to powder coating. second what is the difference in corona and tribo guns and benefits of each please. i am starting off small and feel the hobby gun from eastwood would be fine to start but i am anal and like to know what this stuff is / means before i just jump in. thanks to all for the great info/ discussions on this board to date i have already learned alot. also thanks for any replies in advance.