On Fri, 15 Apr 2005 16:46:42 -0400, Alan King <
alan@...> wrote:
>
> How are your bubble etches uneven? More finer bubbles should make
> things
> fairly even in a local sense, if it's more etched at the top than bottom
> or vise
> versa then use more bubbles and slope the side of the tank away from or
> toward
> the board to even things out.
It is faster at the bottom, where the bubbles hit.
Sloped sides sound interesting, any idea how much?
I had streaks from the bubbler-holes, but i'm gonna fight that with a
porous bubbler.
> Not sure that's even needed. Use a rigid frame for the board, on a
> floating
> suspension over the tank. Stick a medium sized massager vibrator motor
> on the
> frame and see if that doesn't work. May need a small amount of pumped
> circulation for best effect, but a vibrating board should do fairly well
> just by
> itself.
> Alan
Don't like moving the board much 'cause it requires a pretty firm hold on
the board. I have a rather nice board holder
design that clamps the board without needing to wash anything or use
gloves etc., the downside is it can't be super-strong hold.
ST