Homebrew PCBs

On Sat, 17 Apr 2004 07:37:53 -0700 (PDT), mpdickens <md30022@...> 
wrote:

>
> --- Stefan Trethan <stefan_trethan@...> wrote:
>> what about clorine gas?
>> more information please.
>
> Chlorine gas generation is not a problem unless too
> much current is used. My rule of thumb is if I see
> *any* bubbles, I've got chlorine gas generating. For
> sure, low current takes longer to plate out the
> copper, but I'm not in a huge hurry (I'm not
> manufacturing for money, just as a hobby).
>
> Best
>
> Marvin


I feared if i use that low a current the etch may overcome the plating 
again.

do you need to add anything to your etchant? replenish chemicals i mean.

I reckon it would not be a problem at all to have two titanium rods in my 
tank,
i could get them at ebay..
what have you payed for the screws? i really doubt i can find titanium 
screws in any
hardware store here.

One would need to know a surgeon, i have heard you can get titanium screws 
easily because
very often they prepare screws for a operation which they then don't use 
and they
can't be reused once opened.

ST