The
cue ball was handy and readily adoptable for the first manipulator. Cue
balls were originally made from ivory, then nitro cellulose (the first plastic
but a touchy explosive they found out), and then plastic. A ball valve
will have a limited range of motion due to its standoff from the hull and will
be difficult to work with due to the large diameter hole through the
middle. Stainless steel would be great for the ball but may be difficult
to machine for the home machinist.
R/Jay
Respectfully,
Jay
K. Jeffries
Andros
Is., Bahamas
Talk
sense to a fool and he calls you foolish.
- Euripides (484 BC - 406 BC)
From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian
Cox
Sent: Tuesday, August 19, 2008 7:34 PM
To:
personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Re: The
Dry Divers
I
want one too ! I don't get the cue ball part, wouldn't
you have to have a hole thru the cue ball? What are cue balls made
of ? ceramic? What about using a ball valve or simply machine a
large stainless sphere and put a hole thru it.