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Re: [PSUBS-MAILIST] Thanks For Answering But that wasn't really my question.

Hi Clipper, i did not answear that because ALL submersibles DO NOT use acrylic, actually i know several subs that use  polycarbonate.
the only advantage of acrylic i see is that it lets 6% more light through than polycarbonate, the advantage of polycarbonate is that it is almost bullet proof and UV resistant!
i had a crack on a 1/2" thick acrylic canopy after 1 year sun exposure in Puerto Rico
Herve
----- Original Message -----
From: Clipper Crawford
To: personal_submersibles@psubs.org
Sent: Thursday, August 29, 2002 9:03 PM
Subject: [PSUBS-MAILIST] Thanks For Answering But that wasn't really my question.

What I was really wanting to know is why do almost all submersable use methacrylate reather than lexan. Is it due to cost or realiability or some other reason?

                                                                                            Clipper

>From: "Herve"
>Reply-To: personal_submersibles@psubs.org
>To:
>Subject: Re: [PSUBS-MAILIST] I Have a question
>Date: Wed, 28 Aug 2002 23:50:44 -0400
>
>methacrylate or acrylic offers :
>Unusual optical clarity
>High tensile strength
>High resistance to heat distortion
>Outstanding weatherability
>
>lexan is a trade name, for clear polycarbonate and offers:
>Excellent impact strength
>
>Good weatherability
>
>Ease of machining
>
>Thermoformability
>
>UV resisting
>
>Herve
>
>
> From: Clipper Crawford
> To: personal_submersibles@psubs.org
> Sent: Wednesday, August 28, 2002 9:36 PM
> Subject: [PSUBS-MAILIST] I Have a question
>
>
> Why do most submersables use polymethyl methacrylate reather than Lexan?
>
> Clipper
>
>
>
> >From: Marcus Cole
> >Reply-To: personal_submersibles@psubs.org
> >To: personal_submersibles@psubs.org
> >Subject: Re: [PSUBS-MAILIST] VOC monitor
> >Date: Wed, 28 Aug 2002 19:31:19 -0400
> >
> >At 08:29 PM 8/27/2002 Tuesday, you wrote:
> >
> >>Find it online, and send us a link so we can read up more on it.
> >>Sounds kinda
> >>nifty, but not enough details...
> >>
> >>Support your local zonenet
> >
> >Oups! sorry about that one, here's the actual link:
> >http://www2.oregonscientific.com/wellness/ar112c.html
> >
> >
> >Marcus
> >
> >
> >----------
> >"Better to remain silent and be thought a fool than to speak out and
> >remove all doubt." -Abraham Lincoln
>
>
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