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Re: [PSUBS-MAILIST] glueing acrylic



I got a quote for a  24"X24"X4"  at being around $500.00  if I remember correctly.  This would be for    my      " doughnut " (Torus) idea for a viewport.

Brian
----- Original Message ----- 
From: "Coalbunny" <coalbunny@wyoming.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, October 15, 2004 8:57 AM
Subject: Re: [PSUBS-MAILIST] glueing acrylic


> Which is better under pressure, Lexan or acrylic?  And how expensive 
> does it get when it's 4" thick (by the square foot)?
> Carl
> 
> 
> Brian Cox wrote:
> > You can get acrylic as thick as 4" so that way you would glue less pieces.
> >  
> > Brian "cement" Cox
> > 
> >     ----- Original Message -----
> >     From: Emile <mailto:2stroke@hetnet.nl>
> >     To: personal_submersibles@psubs.org
> >     <mailto:personal_submersibles@psubs.org>
> >     Sent: Friday, October 15, 2004 8:20 AM
> >     Subject: Re: [PSUBS-MAILIST] glueing acrylic
> > 
> >     Thank you for the useful information,
> >      
> >     I was studying the possibility of constucting a dome from ring of 50
> >     mm acrylic plate and then machine it  (This was discussed before).
> >     Just add 25 % wall thickness for glue uncertainty.
> >     Why not thust glue? All modern airliners are glued together.
> >     I am also working on a tool for blowing a dome, wich has a better
> >     material efficiency.
> >      
> >     Grs, Emile
> >      
> >      
> > 
> >         ----- Original Message -----
> >         From: No Periscope <mailto:noperiscope@yahoo.com>
> >         To: personal_submersibles@psubs.org
> >         <mailto:personal_submersibles@psubs.org>
> >         Sent: Friday, October 15, 2004 4:42 PM
> >         Subject: RE: [PSUBS-MAILIST] glueing acrylic
> > 
> >         I worked for the university of Colorado for a few years and we
> >         used lots of Acrylic for building test models of buildings and
> >         Dams and just about any thing that needed to be built.  We used
> >         a glue called PS 30 and it was very strong.  It's a two part
> >         glue and if the two components where not in just the right
> >         amount it would craze.  But I never saw any of the joints
> >         separate.  However,,,,I would never ever consider using anything
> >         but a full piece for a view port.   DJB
> > 
> >         Pierre Poulin <pipo305@hotmail.com> wrote:
> > 
> >             Hi emile,
> > 
> >             My friend work at the university here and he glue acrylic
> >             all the time. I
> >             asked him and here is the answer...
> > 
> >             You need: a tank about 0.5" deep and Dichloromethane (french
> >             word sorry).
> > 
> >             How to do: let's say you have a viewport of 8" diameter. you
> >             need about 1/8"
> >             of Dichloromethane on the bottom of the tank, then you drop
> >             the viewport
> >             into the tank so all the surface you want to glue is dipping
> >             in the dich...
> >             wait for about 15 secondes, pull up the viewport about press
> >             it to the other
> >             surface.
> > 
> >             Results: My friend says that you may have some small bubbles
> >             trapped between
> >             the 2 parts. As for strenght, he says that it is as strong
> >             as a full plate
> >             of acrylic. he does boxes shape and when they "destroye"
> >             them, the acrylic
> >             almost always break right next to the join. Not the join itself.
> > 
> >             Hope it helps!
> > 
> >             P! ierre Poulin
> >             "building a dry-ambient sub"
> > 
> > 
> >              >From: "Emile" <2stroke@hetnet.nl>
> >              >Reply-To: personal_submersibles@psubs.org
> >              >To:
> >              >Subject: [PSUBS-MAILIST] glueing acrylic
> >              >Date: Fri, 8 Oct 2004 15:12:20 +0200
> >              >
> >              >Hello all,
> >              >
> >              >Can anybody help me to some accurate data about glueing
> >             acrylic to acrylic?
> >              >the following points:
> >              >
> >              >-how stong. absolute and relative to the acrylic
> >              >-methods/ materials
> >              >-optical quality
> >              >
> >              >thanks in advance.
> >              >
> >              >Emile D.L. van Essen
> >              >www.AiResearch.nl
> > 
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> > 
> > 
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