Homebrew PCBs

So the answer would be, don't use paper towels that have printed
designs on them. 



--- In Homebrew_PCBs@yahoogroups.com, "mikezcnc" <eemikez@c...> wrote:
> 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