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Re: [PSUBS-MAILIST] Portholes, Windows

I have an odd tendency to reinvent the wheel... that sounds like a great idea.. THANKS!
George Slaterpryce
----- Original Message -----
From: Todd Fee
Sent: Tuesday, February 28, 2006 10:10 AM
Subject: RE: [PSUBS-MAILIST] Portholes, Windows

I don't understand why you're trying to cast such an easy shape to cut. Why not start with 2mm clear acrylic and cut it in to a 2 cm circle? You could use a plug cutter or similar device. Another though is to search ebay for cheap rifle scopes or similar optical instruments that already have fully ground glass lenses and adapt one of them to your sub. I've never tried casting acrylic, it sounds like it might be fun. Good luck.
Todd
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of George Slaterpryce
Sent: Tuesday, February 28, 2006 9:38 AM
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] Portholes, Windows

I've been trying to make windows for my ROV's camera to look out of, I'm using acrylic and am pouring that into a mold for the window shape. The window is 2cm in diameter and 2mm thick. I need to keep it thin or it distorts the camera image. It's also flat, no dome shape (I couldn't figure out how to get a nice smooth dome... although now I have quite the collection of odd shaped tiddly winks if anyone's interested)
Problem is the things are so brittle I don't think they'll stand up to much preasure.
 
Am I missing something here?