Yes. Polypropylene, and polyethylene are the two most common plastics for
containers and packaging and are have very good chemical resistance.
I've been playing around with cupric chloride solutions, trying different acid
and copper strengths, and found that the recipe described on Rex Allers cupric
chloride etching web page is far from optimum. If the copper concentration is
greatly increased the etch rate can triple. I have to buy new hydrometers
because the density is well above 1.2 which is the highest I can currently
measure. I'll let you know how it goes.
grantfair2001 wrote:
> I bought a plastic Coleman cooler to hold my cupric chloride etchant.
> The manufacturer says this is made of polyethylene. Is this likely to
> stand up well, or at all?
>
> Grant
>
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