Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Monday, May 23, 2005 11:01 AM
Subject: Re: [Homebrew_PCBs] You guys have a look at this:


> On Mon, 23 May 2005 11:54:09 -0400, microsoftwarecontrol
> <microsoftwarecontrol@...> wrote:
>
> > I really get high quality pcb. One of important tool
> > is accurate temperature control from my tmpr module.
> > http://ca.geocities.com/microsoftwarecontrol/tmpr/tmpr.htm
> > Now, all other points in home PCB is solved perfectly, only problem
> > to me is etching uneven! I prepare to build a contant temperature tank,
> > with
> > fuild in cycling.
> > By the way, if any body need my tmpr module, you can email me. I will
> > enjoy
> > my time turn out with some cash. And only if you can handle 110
> > electricity.
> >
>
>
> Nice work there..
>
> What sort of etchant agitation do you use?
> I found with smaller bubbles from the bubbler hose my etching is OK now.
> It is still faster at the bottom edge, but that is to be expected .

I found well agitation is really esantial in etching. Uneven should be
eliminated at all.
I found a small cycling pump for chemistries, I only worry about flow rate
of it. After
I real test it, I will give result here.

By the way, I think of glueing a narrow glass tank with bottom been heated.
Is that kind of glue for home aquarium glass tank, OK? Can it take 70C?



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