Homebrew PCBs

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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