Re: [PSUBS-MAILIST] Aqua Jet Cutting Acrylic

[irox <irox@ix.netcom.com>]

[I have to admit I'm a little shy about posting to this thread given
some of the things people have said recently, but, here goes anyway...]

Other than Dr. Stachiw stating in his book that all Acrylic viewports
require annealing, there are some other things I would consider when
thinking about this question.

Cast Acrylic viewports require annealing.  I expect cast Acrylic to be
closer to 'prefect' than any form of cut Acrylic, but it still requires
annealing.

Other than annealing, you are also required (by ABS[1]) to preform
a shrink cycle.  The equipment and effort required for the shrink
cycle is pretty close to what you need for annealing, so skipping
the annealing process wouldn't save much anyway.

Ian.

[1] - Yes, yes, I know, psub builders are not required to conform to
any ABS standards...

-----Original Message-----
>From: Brent Hartwig <brenthartwig@hotmail.com>
>Sent: Aug 22, 2007 10:49 AM
>To: personal_submersibles@psubs.org
>Subject: [PSUBS-MAILIST] Aqua Jet Cutting Acrylic
>
>
> 
>Hello Joe,
> 
>I agree with your approach.  I was pursuing information to prove it or not, if the information was to be had from the groups knowledge base. I plan to anneal my aqua jet cut view ports, unless I get good solid data otherwise. I was just interested in finding out if I had found a way to cut out one step out of the process.Brent 
> 
>P.S.  It looks like Frappr.com is down for a bit.
> 
>> From: joeperkel@hotmail.com> To: personal_submersibles@psubs.org> Subject: RE: [PSUBS-MAILIST] Open Discussion's Allowed in PSUB's Mailing List> Date: Wed, 22 Aug 2007 10:57:43 +0000> > Brent,> > Something like the acrylics issue, my approach is to consider all ideas > "suspect" until proven otherwise.> > If there is no reference to the "non-annealing" of water jet cut acrylics in > a highly specialized and expert Stachiw type reference, then it is best to > "assume" it to be a required process based upon the previously existing > processes.> > Joe> 




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