Homebrew PCBs

Frank P wrote:
>  
>
> Eddie,
> I'm new to etching too, so I am going to ask a naive question.
>
> The link you provided looks like the tin plating takes place PRIOR to 
> etching.
>

For this method, since its electroplating, its done prior to etching.  I 
am not sure if all etchants will work on the tin plating though.  The 
author uses cupric chloride, so at least we know that works.

>
> I thought the tin plating took place AFTER etching.
>
The chemical (electroless) methods are used after etching.  This is the 
usual hobby method of tinning, but its way too exepensive for me,

>
> I believe Steven's solution of using rosin flux and alcohol is meant 
> to be used after the etching process(I think).
>

I normally use flux and tinning with a hot soldering iron.  Its ok for 
small boards, but a bit tedious when you start doing bigger pcb's.

>
> I'm a little confused with the timing. When is tinning meant to take 
> place?
>
> Thanks.
>
>
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