Homebrew PCBs

Alessio,

Are you using magazine (glossy) paper? If that's the case, I think you are
referring to the paper residue left on the board after the board is soaked
in water and roughly cleaned-up.

Actually, I found out that I do not need to clean the board that well at
all. I use warmed up Ferric Chloride and it eats through that white paper
residue during etching. To make sure that happens, with gloves on and the
board immersed in Ferric Chloride, I run my fingers all over the board. That
makes sure that the etchant gets through the paper residue but areas/lines
covered with toner remain fine of course.

Here is the photo of a board I made a few days ago this way.
http://retromaster.files.wordpress.com/2010/06/ufe-a500-kbd-bottom.jpg

I wish I had taken a photo just before etching to show how the board looks
with the white paper residue I am talking about.

Hope this helps,
-Tolga

On Sun, Jun 13, 2010 at 8:02 AM, Alessio Sangalli <alesan@...>wrote:

>
>
> Hi. I think I got a good technique to make fairly complicated PCBs,
> double-face, etc. The toner transfer technique allows me to do very thin
> traces, and it's very consistent. I'm really happy; anyway, what is
> really slowing me down at this point is the paper removal. I have to
> inspect the PCB very carefully before etching, as lots of tiny pieces of
> paper remain attached between traces. It is extremely frustrating; what
> do you suggest to do?
>
> bye
> as
>
> 
>


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