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Message

Re: Electro-Etching

2004-11-05 by Gary

--- In Homebrew_PCBs@yahoogroups.com, "Phil" <phil1960us@y...> wrote:
> 
> --- In Homebrew_PCBs@yahoogroups.com, "Thomas" <teecee@c...> wrote:
> > sounds good, or have I missed something here ...
> > what about the unconnected copper area's of the board ? 
> > I am thinking that the unconnected copper would need a Jumper wire
> as such to complete the circuit so as to be etched
> > 
> 
> They are connected until (almost) all the exposed copper is 
removed. 
> I would guess that some of the inside areas would not etch 
completely.
>  He mentions a final etch with traditional etchants.  Clearly, a
> little FeCl, CuCl or AP would go a very long way.
> 
> The need to have 2 etching set ups outweighs the benefits for me but
> it is kind of cool.
> 
> Phil

Yes, This is Correct.
I realize for Commerical Production this is Probably Not Practical, 
But for Hobbiests, It can save a lot of Dollars and just adds an 
extra step.

Specific Questions will be answered if you email me through my 
website. Sometimes I don't get into Yahoo Groups very often.

Towards the end of the Electro-Etching it is Important to remove it 
Soon, Rather than Later or you will get Undercutting. 
I Recommend a Glass or clear plastic container, with a light behind 
the board, making it is Easy to see the etching progress. When Light 
Appears to show through the board, remove it and finish it in the 
FeCl.

Try it and Have Fun...........Gary

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