can you share more information about where to purchase these photo boards.
do you have to keep the boards in the dark same as photography?
do you have to expose, develop, stop, fix, then etch?
what are the steps to processing?
thanks.
mkl
----- Original Message -----
From: <ted@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, December 14, 2002 7:17 AM
Subject: [Homebrew_PCBs] Re: How to make a PCB at home
> What led to the failures?
>
> I'm a novice at home PCB etching but had very good success with
> photo-transfer.
>
> I purchased pre-sensitized PCB's then printed my PCB designs on an
> Epson inkjet printer and high quality transparency film. The quality
> was superb. Doing this I was able to make double sided boards
> without too much hassle. The pre-sensitized boards were about $25
> per square foot, I think.
>
> I compared this to printing the designs on a laser printers (I tried
> two different lasers) and neither of the lasers had accurate
> reproductions. The material didn't feed consistently and the
> magnification wasn't exactly 100%. The inkjet on the other hand was
> super accurate, beyond my capacity to measure.
>
> The main thing I had to do was get high quality inkjet transparency
> film and print in highest quality mode.
>
> The film I used was Pictorico premium OHP transparency film. The
> quality is absolutely perfect on this film, much better than the 3m
> and Apolo films I tried which don't seem to take the ink very well.
>
> The other thing that was important was to print the images mirrored,
> so that I could put the printed side of the material in direct
> contact with the board. If you print normally, then the light has to
> go through the transparency material after striking the printed
> pattern, and then it gets blurry by the time it reaches the board.
> This is key for sharp lines. Plus of course the glass on top to keep
> things flat.
>
> good luck.
> -Ted
>
> --- In Homebrew_PCBs@yahoogroups.com, "Salam <salamgobran@h...>"
> <salamgobran@h...> wrote:
> > what is the best way to produce a PCB out of a layout on the PC at
> > home ?? i tried a lot and failed a lot
>
>
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