From: V G <veegee@veegee.org>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Fri, 12 Feb 2021 10:22:06 -0800
Subject: Re: [EE] Measuring PCB copper weight?
Thread-Topic: [EE] Measuring PCB copper weight?
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On Wed, Feb 3, 2021 at 11:08 AM Neil <picdude3@narwani.org> wrote:

> Is there a simplish way to figure out or measure the copper weight on an
> existing PCB?
>
> I'm asking because I'm redoing a layout for someone and I did not do the
> original circuit design, so was planning to use the same trace widths as
> on the original board, but I'll need to know the copper weight to order
> a prototype board.
> If I have to redo the math on current etc, that opens up another can of
> worms as I don't have all of the specs otherwise.
> And the copper does feel thicker than usual.
>

If a destructive test is possible, you can get an exact answer by
dissolving it in ferric chloride and measuring the mass.
--=20
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