Correct.

I'd reccommend something a bit stronger than a yogurt container...
I use a 1-litre glass-jar (was filled with marmelade...) It will allow me to
etch a double-sided 70x120mm board. It is also very sturdy and won't topple
over.

Neat trick for nice bubble-solution in glass jar:
- Make a plastic disc that will fit in the bottom of the jar (for example
from the bottom of a yogurt container?) and draw up a spiral pattern for
your airhose...
- make holes in the disc that match the outlines of the airhose at a
somewhat regular intervall...
- clogg one end of the airhose.
- Use fishing-line to tie down the airhose starting with the clogged end in
the center and move outward in the spiral.
- experiment with making holes in the hose untill you are satisfied with the
bubble-pattern.  A hot needle is great for this!
- Use a bit of silicone or something to glue the disc to the bottom of the
jar.

I'd reccommend a lid on the jar while bubbling or you will cover your
work-area in acid from the mist rising from the water/acid while bubbling.

You can use the cheapest air-pump for aquariums that you can get your hands
on.  flow won't be a big deal...  However a little more expensive one
(10-15$?) will give you some headroom and the option to limit the airflow a
bit if needed.

    Have fun!

----- Original Message -----
From: "Jai Dhar" <jdhar@ENGMAIL.UWATERLOO.CA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Friday, March 28, 2003 2:07 AM
Subject: Re: [EE]: Etchant tank


> Wow, this maybe easier than I thought - so let me get a few things
clarified
> here.
> Sid, polyethylene - you are going to have to clarify here :-) Are we
talking
> about plastic here, or glass??? Or neither..
>
> It seems from the rest of your posts that food containers are sufficient
(which
> is splendid - I happen to have a collection of yogurt containers that are
doing
> absolutely nothing but looking pretty.... don't ask).
>
> Tony, what is bell wire, and what is the purpose of putting it in the
corner of
> the boards?
>
> Basically, if I want to be cheap about this, all I need is some plastic
> container, the etchant, and something to suspend the board?? The rest
(heater,
> pump) is just for convenience?
>
> This is good news if I am correct, might be a lot easier, heh.
>
> Thank you all,
>
> Jai
>
> ----------------------------------------
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>
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