I suppose that he is regarding the professional photoresist (not KPR, Positiv20, and so on, that stuff is useless). The professional photoresist comes in liquid form and is applied with a dip coating machine. With a litter of it you can cover approximately 200-300 PCBs sized 12" by 12".
Message
Re: liquid photoresist
2008-02-15 by jcarlosmor