[hackerspaces] Instructable: Super easy PCB production with vinyl masks

[Dan Wobser]

Like Potassium Bromate <http://www.youtube.com/watch?v=zG8D2_sYbUI>!



On Fri, Dec 9, 2011 at 12:24 PM, Harry <harry at deds.nl> wrote:
>
>> Comment 2.  What exactly are you using as etchant?  Ferric chloride is
>> the stuff I know.  Granted, I wouldn't want to eat the stuff or swim
>> in it,
>
> Well, my tronix shop sold me a bag of Ammoniumpersulfat. The dutch
> wikipedia page on this stuff says it is used for both etching PCB's _AND_
> it is an add-on to improve bread, known as E923.
>
> I wish you one very happy breakfast.
>
> http://nl.wikipedia.org/wiki/Ammoniumpersulfaat
>
>
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