ENIG is electroless nickel immersion gold. I presume INIG is immersion nickel immersion gold (I have no specific experience with it).
In any case ENIG is does not use an electroplating process for the nickel.
The "immersion" parts of the process are electroplating.
Donald.
----- Original Message -----
> From: "Jean-Paul Louis louijp@... [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com>
> To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> Sent: Thursday, September 22, 2016 12:04:27 AM
> Subject: Re: [Homebrew_PCBs] DIY Gold Fingers?
>
> You cannot deposit gold directly over copper. You need first to deposit a Ni
> (nickel) barrier.
> That is why the process is complex and expensive.
> The industry has two slightly different ways to do it, INIG and ENIG which
> differs only on the way the nickel is deposited. Some other use a process
> called ENEPIG which is even more complex as ir uses a palladium intermediate
> between the nickel and the Gold.
> In all those processes, E stand for Electroplating while I stands for
> Immersion(chemical).
>
> Just my $0.02,
> Jean-Paul
> N1JPL
>
>
>
> > On Sep 20, 2016, at 1:09 PM, anickol@... [Homebrew_PCBs]
> > <Homebrew_PCBs@yahoogroups.com> wrote:
> >
> > Sorry to inform you, but there is no simple ans inexpensive way to put gold
> > on copper. I've got some recipes, which contain materials like gold
> > cyanide, potassium cyanide, etc. When I first saw these, I thought that
> > I'd better abstain from this.
> >
> >
>
>
>
> ------------------------------------
> Posted by: Jean-Paul Louis <louijp@...>
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>
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