Homebrew PCBs

I called Bounty out of curiosity. I read before about the possibility 
of paper contaminating my boards. Bounty checked with their chemical 
engineers and no, there is nothing that could possibly transfer and 
contaminate except for the paper that is printed!!!! The paint can be 
dissolved and leave particles or even images as mentioned on the 
packaging. Hopefully it helps.  Mike


--- In Homebrew_PCBs@yahoogroups.com, "crankorgan" <john@k...> wrote:
>   Thanks Leon! Now that makes sense. The mistake I was making was 
not
> shaking the spray can of sensitizer. I can't tell you how many 
boards
> I sprayed in the dark. I was allowed to use a small a red light. 
After
> cleaning the board I would stand them up in the dark and spray 
them. I
> then dried them using an old hair drier. The negative was that red 
cut
> and peal stuff. I did some boards for a local college through a guy 
at
> work. He got his degree and left our company without paying me! 
> 
> 
> 
> --- In Homebrew_PCBs@yahoogroups.com, "Leon Heller" 
<leon_heller@h...>
> wrote:
> > ----- Original Message ----- 
> > From: "crankorgan" <john@k...>
> > To: <Homebrew_PCBs@yahoogroups.com>
> > Sent: Friday, September 10, 2004 1:15 PM
> > Subject: [Homebrew_PCBs] Don't use paper towels
> > 
> > 
> > >
> > >    After you clean up your copper surfaces don't use a paper 
towel on
> > > the copper. Air dry the copper. I was told if you rub the board 
with a
> > > paper towel it leaves a coating. I think he said it was some 
kind of
> > > silica? Maybe somebody he knows?
> > 
> > Silicone oil, perhaps. It used to be used on the fuser roller in
> some Xerox 
> > copiers. Don't get it in your eyes, it makes them sore for several
> hours 
> > (speaking from experience).
> > 
> > Leon
> > --
> > Leon Heller, G1HSM
> > http://www.geocities.com/leon_heller