Whew!
A really bad idea!
There are so many less dangerous materials that have been used to etch PCB's
that have proven to be relatively safe and very effective over the last
50 or 60
years.
The task is not that complex or hazardous.....why make it so?
Roland F. Harriston, P.D.
∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗
On 3/30/2013 7:31 AM, Rick Sparber wrote:
>
> Has anyone used lye to etch aluminum through photo resist?
>
> As a test, I put a strip of aluminum in lye plus water and after 15
> minutes
> the strip was half of its original thickness. So there is no doubt
> that lye
> can etch VERY deep. But the chemical reaction generated a lot of heat and
> the tape I had on there quickly floated off. Next time I will use more
> water.
>
> I did have the lye and aluminum outside while I watched from inside. Nasty
> fumes!
>
> Thanks,
>
> Rick
>
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>
>
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