yes its still good, clumps and all.
heat and agitating work good, but mounting the board vertical and lightly
spraying the etchant on to the surfaces of the board works much better, but
you need a chemical proof pump, it has to be stainless or plastic or a combo
of the two.
we have found some windshield washer spray pumps are all plastic, but be
carefull because some are not and will be eaten away.
norm doty
btdt (more than once)
>From: Steve Greenfield <alienrelics@...>
>Reply-To: Homebrew_PCBs@yahoogroups.com
>To: Homebrew_PCBs Mailing List <homebrew_pcbs@yahoogroups.com>
>Subject: [Homebrew_PCBs] Ferric chloride?
>Date: Thu, 17 Oct 2002 13:02:20 -0700 (PDT)
>
>I can get some ferric chloride cheap, a few dollars for a pound. It
>is a bit old, sealed in two bags but it has stuck together a bit.
>Not so much I can't break it up easily.
>
>1. Is it likely to still be good? I just got a pound today but I
>have the opportunity to buy a lot more cheaply.
>
>2. Is there anything I can do to it to make it work better? Other
>than the normal heating and agitating, I mean.
>
>=====
>Steve Greenfield // Digital photo scanning, retouching,
>Polymorph Digital Photography // and photomorphing to your specs.
>253/318-2473 voice // We use the best little computer in
>polymorph@... // the world, the Amiga!
>http://www.polyphoto.com/ // Based in Tacoma, WA, USA
>
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