RE: [PSUBS-MAILIST] Sub as panoramic film platform

The only suitable material for viewports is domestic cell cast acrylic. Polycast supplies a PVHO grade. I would strongly recommend J.D. Stachiw’s book on viewport fabrication.

Greg Cottrell

Project Manager

greg@precisionplastics.com

http://www.precisionplastics.com

P please consider the environment before printing this email

From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian Cox
Sent: Monday, September 20, 2010 11:20 AM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Sub as panoramic film platform

Greg, I have already machined my viewports and they are just waiting for me to get the acrylic lenses to fit in. I was thinking that I could purchase some regular plexieglass (1 1/2" thick) and machine those so I could play around with how everything is going to fit together. Can you tell me if the machining properties are much different between the cast acrylic and regular "low grade" plexieglass? I imagine that the cast acrylic would be a denser material so it may machine and polish much differently. Thanks,

Brian

-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]On Behalf Of Greg Cottrell
Sent: Monday, September 20, 2010 5:53 AM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Sub as panoramic film platform

Domes for subs that can dive to that depth are not acrylic- they’re similar to Pyrex glass.

Greg Cottrell

Project Manager

greg@precisionplastics.com

http://www.precisionplastics.com

P please consider the environment before printing this email

From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of JimToddPsub@aol.com
Sent: Sunday, September 19, 2010 10:02 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Sub as panoramic film platform

Hi, Ian,

I'm not sure what Graham is doing with Deep Flight Challenger right now. The last I knew it was sitting waiting for someone with enough money to put it to work. The discussions of the last few days on acrylic canopies/viewports make me wonder how Challenger or Cameron's proposed sub can sustain 36,000 foot depths with that type of canopy. Fortunately my challenges are much more modest.

Jim

In a message dated 9/19/2010 7:02:43 P.M. Central Daylight Time, irox@ix.netcom.com writes:

Hi,

I read about that too, but it didn't mention Australian engineers
in the one I read. I had assumed that he'd some how purchased
Steve Fossett's unused sub or commissioned another one like it.
The graphic with the article is definitely a deep fly sub.
Maybe they've mistaken Graham Hawkes' accent for Australian.

Cheers,
Ian.

-----Original Message-----

From: JimToddPsub@aol.com

Sent: Sep 19, 2010 3:38 PM

To: personal_submersibles@psubs.org

Subject: [PSUBS-MAILIST] Sub as panoramic film platform

Gee, I had no idea it was this easy to build an ultra deep water sub:

http://blog.moviefone.com/2010/09/17/avatar-2-james-cameron-underwater/?icid=main%7Chtmlws-main-w%7Cdl7%7Csec3_lnk1%7C171219

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