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Re: [Homebrew_PCBs] How to dispose of etchant?

2010-01-05 by Leon Heller

----- Original Message ----- 
From: "DJ Delorie" <dj@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, January 05, 2010 5:26 PM
Subject: Re: [Homebrew_PCBs] How to dispose of etchant?


> 
> "Leon Heller" <leon355@...> writes:
>> > The FeCl etchant can be rejeuvenated with a little Hydrochloric acid;
>> > eventually it also becomes CuCl etchant.
>> 
>> + H2O2, otherwise it will be cuprous chloride which doesn't etch.
> 
> What happens if you dump spent FeCl etchant into a CuCl ethant bath?

It'll work OK with oxygenation.

Leon

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