[chbot] chemical milling
markaren1 at xtra.co.nz
Sun Dec 6 21:43:18 GMT 2020
The hydrogen peroxide/hydrochloric acid solution looks most interesting; never heard of it before.
My largest complaint back-in-the-day when using Ferric Chloride was the indelible orange-stain that the spills caused.
Anyway, I am looking into chemical-milling some thin copper sheet, and you may have solved one of the issues.
Just wondering about spraying a thin layer of paint on the copper. Removing the 'resist' using a laser cutter, then etching the remaining piece.
Anyone have any experience with a similar process ??
> On 07 December 2020 at 09:14 Andrew Errington <erringtona at gmail.com> wrote:
> Ferric chloride is nasty, and becoming increasingly difficult to get.
> Try hydrogen peroxide and hydrochloric acid (or hydrogen peroxide and vinegar). Instructions on the web. I have tried it and it works.
> On Mon, 7 Dec 2020, 08:56 Marshland Engineering, < marshland at marshland.co.nz mailto:marshland at marshland.co.nz > wrote:
> > > Is this Ferric Chloride still available in NZ ?
> > I have some ammonium persulfate but FC works at room temperature which makes
> > it easier.
> > Cheers Wallace
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