Homebrew_PCBs

Just make sure your tank is compatible with your etchant - Ferric will
eat stainless!

Les

Stefan Trethan wrote:

>>I think I read about surface tension of the etchant and exposure of
>>the coppper being different if it was submerged and bubbled and
>>sprayed. IIRC, spraying acutally allowed the etchant to be removed
>>down to the copper whereas the think film of etchant with bubbling
>>never really did.
>>
>>Dave
>>
>
>
> must be the cause. moving the board seems to work ok, and it is zero-mist
> also.
>
> I wonder what a ultrasonic transducer would cause?
> I mean it also rips off the etchant, doesn't it? the question is if the
> resist
> would survive (anyone having a ultrasonic please put a board with resist
> in and tell us).
>
> ST
>
>
>
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