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Subject: Re: [Homebrew_PCBs] plated tin as the etch resist

From: "Jeremy Taylor" <jt@...>
Date: 2004-04-02

Hard to say - and subjective at best. but IMO yes.
We can discuss this more tomorrow, I've been trying to take some pics , but
man is it difficult to even get the holes...




http://www.soundclick.com/jtsound
----- Original Message -----
From: "Adam Seychell" <adam_seychell@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, April 01, 2004 11:09 PM
Subject: Re: [Homebrew_PCBs] plated tin as the etch resist


>
>
> Jeremy Taylor wrote:
> > My last post must been sent just prior to yours.
> >
> > I actually ended up completely closing up some holes with the acid
copper.
>
> Does that mean the alkaline plate was more capable of completely
> covering the holes walls with copper than compared to acid copper
> plating ? Which bath was better ?
>
>
> > It' definitely a more aggressive plate.
>
> yes, the acid copper is fast, almost 100% coulombetric
> efficient, good throwing power and easy to maintain and setup.
> This is why I suspect you have chosen alkaline plating because it
> performed better when plating on the ink surface.
>
> Regards,
>
> Adam
>
>
>
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