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Subject: Re: Spray etcher

From: "cunningfellow" <andrewm1973@...>
Date: 2012-08-25

> D. Gareth Hughes wrote:
>
> According to every website I have looked
> at, acrylic has good resistance properties
> to acids and alkalides, and specifically
> copper chloride and ferric chloride so i
> cannot see why it would not be safe to use,
> unless it is the glue used to stick the
> acrylic sheets together?
>

Is it a problem with peroxide then?

'Cause I had a commercial acrylic bubble
tank that was used for years without problem.
Then after switching to CuCl (regenerated
with 40 weight H2O2) it crazed and went
brittle in about 6 months.

I now used HDPE and PCV and neither have an
issue. Some builds even had ABS parts in them
which I thought would be marginal, but seem
OK.