On Wed, 25 Sep 1996 16:20:46 +0000 george <[log in to unmask]>
writes:
>
>Doug
>Perhaps I've been around too long, but, with a smile, I can remember 
>.....
>
>One part isopropol, one part water, one part Lemon Joy makes a fine IR 
>reflow flux 
>also.  (adjust pH to 1-2 with HCl).  Black Jack Molasses used to be 
>The copper 
>brightner of choice.  Spray cans of "Static Gaurd" can help keep the 
>static charge 
>down in the printing exposure frame.  Chrome plate likes uric acid as 
>a brightner.  
>I won't go into how they figured that out.  Toothpastes containing 
>diatomaceous 
>earth do OK as a polish on micro-sections.  Certian Shampoos will work 
>as anti-pit 
>agents in the Nickel plater.  Autobody epoxy works as a quick cross 
>section mount.  
>Never tried Tarn-X as a flux, but it does work as a solder brightner, 
>and helped at 
>the old reflective AOI machines to quickly get the copper bright.  
>Pencils and a 
>cotton ball work as a brush gold plating anode.  There was something 
>disgusting 
>which once was used in Tin-Lead/HBF3 platers before peptone...
>
>Walmart can supply some PWB product needs, and you get wat you pay 
>for.  Just 
>because there are suppliers who charge big bucks for supplies doesn't 
>mean there 
>isn't other stuff out there that works, at least 60% as well.  
>Sometimes 60% is 
>good enough.  The problem is, you gotta know when 60% isn't good 
>enough.
>
>
>By the way, just what surface insulation resistance would one get on a 
>board which 
>was washed in Cascade after hot air solder level?  I've understood it 
>had been 
>tested and found it "passed" the "Omegameter" test.  Does that mean 
>better than 
>60%?
>
>In search of better uses for Tobasco, 
>George Franck
>
>
>Darn, there is a great mold release (non-silicone) for the lamination 
>press pins 
>and plates, and I can't remember it.
>
George, You may be thinking of PAM Spray? 

Sorry I just couldn't resist.....

Scott

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