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RE: [PSUBS-MAILIST] Aqua Jet Cutting Acrylic
Mineral oil is not recommended. Silicone oil is fine.
-Sean
Quoting Brent Hartwig <brenthartwig@hotmail.com>:
>
> Jay,
>
> No reference needed, I'll take your word on that. Thanks for the heads up.
>
> Regards,
> Brent Hartwig
>
>
> From: bottomgun@mindspring.comTo: personal_submersibles@psubs.orgSubject: RE:
> [PSUBS-MAILIST] Aqua Jet Cutting AcrylicDate: Thu, 23 Aug 2007 07:49:24
> -0400
>
>
>
>
> Brent,
> DO NOT USE HYDRAULIC FLUID!! It is destructive to acrylic plastic. Hope I
> don?t have to give a reference. J
> R/Jay
>
>
> Jay K. Jeffries
> Andros Is., Bahamas
> A skimmer afloat is but a submarine, so poorly built it will not plunge?
>
>
>
>
>
> From: owner-personal_submersibles@psubs.org
> [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brent
> HartwigSent: Thursday, August 23, 2007 1:53 AMTo:
> personal_submersibles@psubs.orgSubject: RE: [PSUBS-MAILIST] Aqua Jet Cutting
> Acrylic
>
> Wil, Interesting Idea you have. My friend Lou, that manufactures stainless
> steel tanks, has a hydraulic pump that can go up to 1200 psi, which would be
> like 2694 fsw. We could build a special but small stainless steel tank with a
> viewport in it and then fill it with hydraulic fluid and test it to
> destruction, unless the viewport tested can with stand more then 1200 psi. Of
> course we will need to take into account fatigue cycles as well as different
> temperatures, as well as a few other things. This type of set up can test
> different types of polycarbonate viewports as well. I can take digital videos
> of each test and share them with the group.
>
> Regards,Brent Hartwig
> > Date: Wed, 22 Aug 2007 14:08:15 -0700> From: clientes@tolimared.com> To:
> personal_submersibles@psubs.org> Subject: Re: [PSUBS-MAILIST] Aqua Jet
> Cutting Acrylic>> May i suggest a practical approach on this...> > The core
> of the problems seems to be that many of us just want to use > a simple
> acrylic disc piece that you can get in a normal acrylic store > - where they
> do decorative items more than submarines - and use it as > a viewport. The
> truth is when you get your arcylic disk you do not > know exactly what
> process it is trough or not - it looks good - and > you do not want to build
> a computerized heating facility just to be in > peace with the Professor or
> ABS you also do not want to convert in > acrylic scientific you just want to
> know what is safe.> > The question that arises is : IF they did NOT anything
> right in the > factory - (which is a remote or not so remote posibility) what
> is the > depth i can do with this - and still be on safe side. Is it fine to
> do > half of stachiew and ABS and forget about all those complicated >
> proeedings? - or should it be 1/3 ?> > So i would suggest somebody who has a
> water yet and a hydraulic pump > available cuts out a model series 1:2 from
> sheet material and tests it > to destruction in a simple mounting inside a
> hydraulics cylinder - > with and without annealing...shrinking...> > And
> hopefully publishes this - of course no guarantee - on this forum.> > What is
> of interest for us all is what is the DIFFERENCE - and a > educated guess on
> that.> > > Cheers Wil> (concretesubmarine.com)> > > > > > Quoting 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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