Re: [PSUBS-MAILIST] PSUB Fatalities...View Ports...Shatterproof

["D. Blake" <dblake@bright.net>]

Hi Wade:
I think first you should decide what kind of viewport you have in mind.  A
simple flat viewport 8-10 inches or so can be made from a flat sheet of
acrylic.  Of course you have to put it through a process of anealing.  Look
through the psub archive.  Also, you might want to get the books that are
recommended on the subject.
Big Dave
-----Original Message-----
From: Wade Carson <wacarson@interchange.ubc.ca>
To: personal_submersibles@psubs.org <personal_submersibles@psubs.org>
Date: Monday, March 13, 2000 11:53 PM
Subject: RE: [PSUBS-MAILIST] PSUB Fatalities...View Ports...Shatterproof


>Hey folks,
>
>Although this topic has had nothing to do with submarines, I think that it
>demonstrates something that we should all learn.  It is important to look
at
>an issue from all sides before committing to it.  When building submarines,
>I think that keeping that fact in mind might help to keep us alive.
>Originally, I thought that buying a gun for protection was sort of like
>buying a sword to cut your vegetables or a baseball bat to mash your
>potatoes.  But having read some of the stories posted, it appears as though
>I may have been incorrect in that idea.  On the other hand, it seems that I
>was entirely justified in my paranoia about visiting my troubled southern
>neighbors.  Generally, my idea of protecting my family is making them wear
>coats when it's raining and for the most part that is about as serious as
it
>gets so it is difficult for me to understand needing or even wanting a gun.
>My advice to the lot of you is move as soon as you can.
>
>Anyways, what I would like to know is how viewports are usually
>manufactured.  Are they molded from a single piece?  Is the process
>difficult?  Presuming that they are heated to mold, what sort of
temperature
>range is acceptable (i.e. does it have to be accurate to within ten degrees
>or a tenth of a degree?)
>
>Wade
>