Homebrew PCBs

Hi all,

Since most things have been tried at some stage by various people in the
group, I was wondering if anyone had tried speeding up PCB etching by
making/adapting an 'ultrasonic cleaning tank'.

This
<http://www.maplin.co.uk/Module.aspx?ModuleNo=97187&&source=14&doy=16m11\
>  sort of thing.  This particular one wouldn't be suitable because of
the stainless steel tank (etchant attacks this, right?), but there must
be a plastic one available somewhere...

I can think of all sorts of reasons why this might not work (nasty
etchant vapours produced, breakdown of etchant, removal of etch-resist,
etc.) but until someone tries it we'll never know :)

Since these machines are used for cleaning jewellery, removing
grease/oil, rust, etc. maybe these things are useful for easy cleaning
of PCBs prior to TT or some other masking method?

Lance.



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