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Subject: Re: [Homebrew_PCBs] Re: Etch safe materials for etch tank

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2004-12-13

On Mon, 13 Dec 2004 16:40:13 -0500, Dave VanHorn <dvanhorn@...>
wrote:

>
> Must be a different sort of pump.
> The ones I'm familiar with, have no inlet valve as such.
> They are a small blue or green box, with just an outlet.
>


well, mine had no port for a hose, simply a hole in the pump mechanism.
but nobody can prevent me from simply attaching a hose there with the aid
of glue.
In normal (fish) operation the hole in the mechanism sucks the air in form
the inside of the pump housing.

ST