On Sun, 24 Apr 2005 23:56:15 +0200, Hermod Pedersen
<
hermod.pedersen@...> wrote:
>
> I wonder if the amount of etch solution could influence the result -- as
> I
> would like to use a smaller plastic container with a transparent lid
> (less
> etchant, easier heated and less mess).
> To put it in another way:
> Would, say, 2 dl of etchant solution work as efficiently as 1 liter (10
> dl)?
> [that would be 7 and 34 ounces (2 pints) for all non-metrics]
Depends on etching solution (which one) and board size, copper thickness,
area, ...
IF there is not enough etchant, so that it all gets almost used before the
board is ready, you will see a significant change in etching time. OTOH i
used to etch with something like 3-4mm etchant height over the board in a
container not much bigger than the board with CuCl, but need to regenerate
several times during etch.
It appears to me that if you have a etchant that can not be regenerated,
and doesn't keep, it is best to use just enough. If it keeps and can be
regenerated there is no reason not to use more.
ST