[sdiy] PCBs......DONT use nitric acid!!

[Theo]

I have to totally agree with Paul.
Good ventilation, closed containers and protective clothing
go a long way to make most chemicals save to use.
But Nitric Acid is NOT one of them.

Probably best stay with FeCl3.
Seems to be the most environmentally friendly,
and doesn't form crystals which may cause trouble with some types
of etching machines.

Theo


From: <pfperry at melbpc.org.au>

> Nitric acid will etch coper.. but, it is *far* more destructive (of you)
> than persulphate or ferric chloride, if you spill it on you.
> And the gas given off (mostly nitric oxide, not to be confused with
laughing gas, which is nirtous oxide) is very damaging to the lungs, on a
par with chlorine.
> Generally, I'm pretty relaxed about chemicals. But, no nitric etch for
me!!
> Even if it was free.
>
> paul perry melbourne australia
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