On 28 May 2016 05:30:39 -0700, you wrote:
>Normally you use a bubbler to agitate a small tank, and the pumps are not in the solution.
This is what I normally do.
>Bubbling also regenerates the cupric chloride which is what is actually performing the etch. The HCl/Peroxide mix will quickly eat nylon but most other plastics don't seem to be bothered. Epoxy glue is attacked but slowly. If you're building your own tank, test the materials first.
The tank I'm trying to use is a commercially made tank that flows the
etchant over the board. It uses two heaters and two aquarium pumps.
The instructions (as far as I've been able to find) specify peroxide,
and I'm rather certain that the metal and nylon in the tank will be
destroyed by the HCL/peroxide etchant.
I'm trying to figure out an alternate etchant that's inexpensive and
won't eat the tank.
Harvey
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>Adam Seychell used to have a web page describing the process, but his site seems to be gone.I had to get it from the wayback machine. Jim Williams has duplicated Seychell's page at Etching with Air Regenerated Acid Cupric Chloride http://jimlaurwilliams.org/projects/seychellePaper/
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> http://jimlaurwilliams.org/projects/seychellePaper/
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> Etching with Air Regenerated Acid Cupric Chloride http://jimlaurwilliams.org/projects/seychellePaper/ Etching with Air Regenerated Acid Cupric Chloride By Adam Seychell (Last modified 5 November 2005)
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> View on jimlaurwilliam... http://jimlaurwilliams.org/projects/seychellePaper/
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