Dear Bernard, Some one on TechNet recently said to check the spray pattern of a fluxer by attaching old style FAX paper to the bottom of a board and running it thru the spray. If your flux is alcohol based, that will show you what the pattern is. You can then adjust, clean, etc. until you have full coverage. Hope this helps. Charlie B. Bernard Domingo <[log in to unmask]> on 07/06/98 02:03:48 PM Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to Bernard Domingo <[log in to unmask]> To: [log in to unmask] cc: (bcc: Charles Barker/US/I-O INC) Subject: [TN] Spray Fluxer 070698 Dear Charles, Hi! My name is Bernard P. Domingo, SMT Engineer from EAI Philippines. Actually, Jon is my Senior Engineer and he asked me to provide you the info. you need about our Spray Fluxer. We are using EFD 780S Spray Valve. Stationary headed spray fluxer with compressed dry air as its atomizing air. We have 2 types of nozzle. Round and Fan type. Our flux is Kester 933-3 no-clean, low solid ( 3%), rosin flux. The pre-heat requirement is 80-100