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Homebrew PCBs

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Message

Re: Questions about toner transfer method.

2004-10-13 by Bob Weiss

Thanks for answering me, there was a couple spots very small that 
stayed on the paper when I pulled it off. I am assuming I didn't 
heat it long enough or press hard enough. When you say inkjet paper 
which brand are you using? Is it like regular white ream paper or 
special stuff?

Thanks!

--- In Homebrew_PCBs@yahoogroups.com, "Phil" <phil1960us@y...> wrote:
> 
> I think people print on the shiney side.  The transfered traces 
should
> look black (well, actually a very very very dark blue).  If you see
> copper through them, you aren't getting enough on.
> 
> you should try etching the board.  That's the real test.  You will
> know if you are getting enough toner down.
> 
> How "thick" is the toner on the paper before you iron?  How much 
toner
> is left on the paper after you peel it off?  You should have 
little to
> none left on the paper.  I've had poor luck with the picture/photo
> paper - my traces were getting crushed and widened.  I much prefer
> inkjet paper - much cheaper and very tolerant of different degrees 
of
> pressure.
> 
> 
> --- In Homebrew_PCBs@yahoogroups.com, "Bob Weiss" <BWeiss@p...> 
wrote:
> > 
> > Hello,
> > 
> > I am trying to make a pcb using the toner transfer method and 
have a 
> > couple questions regarding it. I hope someone can shed some 
> > expertise on them for me.
> > 
> > 1) I purchased the Staples picture paper and printed a pattern 
out 
> > on my Laser printer but I am unsure as to which side to print 
on. I 
> > am assuming that you print on the glossy side but after doing 
that 
> > and ironing it on a clean acetoned PCB the pattern seemed to 
> > transfer to it but its not as dark as I have seen on some 
websites 
> > and some traces are broken in the middle. My trace width is .020 
> > which is not that thin. So I thought maybe I am using the wrong 
side?
> > 
> > 2) How long do you heat the paper for? I tried it for at least 1 
> > minute to where it was so hot it sizzled in the water. The back 
of 
> > the paper was turning yellowish from the heat but maybe it needs 
to 
> > be longer? It peeled off pretty easy and it left a whitish 
substance 
> > on the traces which I am assuming is paper. I scrubbed that off 
but 
> > the traces like I said are kindof weak.
> > 
> > Thanks again for all your help!

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