Thanks Bob - appreciate the background!  But the coverage is so much better 
using the "flick fluxer" that we have thrown away two AT&T units and also 
the Sono-Tec units.  We could not get good coverage on the larger PCB's or 
the larger multipannelized PCB's using the AT&T or the Sono-Tec spray 
fluxers.  But now with the flick fluxer's we get very uniform and very 
controlable thickness on all the various board types which we process 
thorough our factories.

During the Deming teachings - we learn to continuously improve our 
processes in an attempt to eliminate defects and this is one of those cases 
where we had many years of experience in using earlier spray fluxers, 
because we have been doing low solids no clean SMT and wave soldering for 6 
or 7 years(from the beginning).  And the tendancy would be to continue to 
improve on our existing process working with our current suppliers and 
making things better over time.  But this was not possible with AT&T so we 
switched to Sono-Tec, while still working with AT&T.  And then we evaluated 
a simpler approach to improve our larger PCB coverage - and it worked right 
out of the gate.  We were as shocked as anyone else, but being well 
trained to look at the data and base your opinions on test data alone.  We 
let the results determine our path!  I don't plan on making the data 
available, because it is company proprietary.  But we are now in the very 
low ppm levels when exiting our Wave soldering process at this time.
	Some times simple is better - but this you will have to determine 
for yourself and your own processes.

Best Regards
Doug Mills


==================================
From:	IN%"[log in to unmask]" 20-JAN-1996 03:28:24.17
To:	IN%"[log in to unmask]"  "INTERNET:[log in to unmask]"
CC:	
Subj:	RE: Spray Fluxer

Well what goes around comes around. Nothing is new it just gets re- born. 
The spray fluxer that was mentioned in the mail is a flick fluxer, try saying
that after a few beers. It was originally and still is on the "Kirston" Jet
soldering machine sold in the UK by Turner Electronics.
The technique has also appeared on other machines, you get the same effect when
trying to paint a ceiling with a brush the paint goes all over the place. I
would question that the coverage is as good a good spray fluxer, but it is
cheap.

Bob Willis
Electro inc Presentation Services
2 Fourth Avenue, Chelmsford, Essex CM1 4HA. England.
Tel: (44) 01245 351502
Fax: (44) 01245 496123