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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