About 50 degree celsius (if i remember correct).
There is a temperature above it gets dangerous (fumes or so).
Use google, i'm sure you will find the exact temperatures.
stefan
On Mon, 13 Oct 2003 21:17:22 -0000, Moore <pminmo@...> wrote:
> What temperature does Ferric chloride need to be heated too for improved
> etch times?
>
> Thanks,
> Phil
>
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