Homebrew PCBs

The last place I worked at used to have a tank made of glass glued with
silicone. This technique is very common on fish tanks and they seldom
leak. Unfortunately after a couple of years the acid weakened the
silicone. One night it collapsed, dumping at least a gallon of etchant
on the floor. The room below now has a big yellow/brown stain on the
ceiling that no amount of paint will cover up.

Les

Andrew wrote:
> Those tanks are actually molded from two peices and
> glued together.  I have had several over the years.
>
> Some HAVE leaked at the glue seam.  Now I am using
> an acid based etchant the latest tank I have is
> developing crazing and slow leaks in the walls.
>
> I do store it ALL in a large HDPE box though so
> leaks are not catastrphic.
>
>