I understand. Thanks for your eplications.
I'm impatient to see youre pendulum at work.
Adrian
--- In Homebrew_PCBs@yahoogroups.com, Alan King <alan@n...> wrote:
>
> adicont2 wrote:
>
> >A simple wedge shape to force
> >
> >
> >>the bubbles back against the board as they try to spread out as
they
> >>rise is all that's needed. Easy to linearize the swing, and with
> >>
> >>
> >the
> >
> >
> >>edge of the board not holding the bubbles in place as well, non-
> >>
> >>
> >linear a
> >
> >
> >>bit may actually be better.
> >>
> >>
> >
> >Sorry, I'm affraid I dont understand... A "wedge shape"...
> >
> >
> >
> >
>
> Think of looking at the edge of the vertical standing board as a
> line, and put another board over to the side, with the top tilted to
the
> board you're etching. Forces the bubbles back towards the board,
get
> the distance and tilt right and it should get the etching to almost
> exactly even.. Bubbles spread out as well as going up, a wedge on
> either side would correct most of it by forcing them back to the
> board.. Would look about like this from one end:
>
> / | \
> /o|o\
> / o|o \
> o o
>
>
> But while I consider this something to design out very soon just
to
> see exactly how well I can make it work, I have boards to finish
cutting
> out and make first..
>
> Alan
>