Re: [PSUBS-MAILIST] Acrylic end of life

[MerlinSub@t-online.de (Carsten Standfuss)]

- Protect it from sunlight during storage you sub - or it will 
have a short life.. 
- cover it from childrens hands and persons with rings and clocks
on their hands/arms - one bigger scratch will end the liftime of this
dome.. 
- use only special cleaner or warm water and soap..

Carsten

Alec Smyth schrieb:
> 
> I can look it up for you in the evening. Bear in mind its not that ANY window of a given geometry will last that many years. The assumption is that it is PVHO compliant in all aspects such as thickness to diameter ratio, material, annealing, etc., etc. If you're designing a window, PVHO is a must read or you can get into trouble real fast.
> 
> Alec
> 
> -----Original Message-----
> From: Michael B Holt [mailto:tlohm@juno.com]
> Sent: Friday, November 22, 2002 8:54 AM
> To: personal_submersibles@psubs.org
> Subject: Re: [PSUBS-MAILIST] Acrylic end of life
> 
> On Thu, 21 Nov 2002 23:29:14 -0500 "Alec Smyth" <Asmyth@changepoint.com>
> writes:
> >
> >Its in PVHO and depends on the geometry of the window. For example,
> >for a dome with a square edge its 10 years, but for a dome with a
> conical
> >edge its 20. Let me know what geometry you're interested in and I can
> >look it up.
> 
> What about a simple circular port?   Something about 6 inches in
> diameter.
> Given those numbers above, they must last about ... forever.
> 
> Mike H.
> 
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