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Re: [PSUBS-MAILIST] Fiberglass



Joe,
Chris is very correct. A combination that is worse is carbon fibre and aluminium. There was a mega yacht built recently that had it's huge rudder fall off on it's first voyage because of the corrosion. In fact I heard people in the trade, say that you get a 'Disprin' fissing effect !
I would make the frames by laying glass in grooves over a polystyrene mould, laying it all up in one go, rotating it on a central shaft and melt the poly. out afterwards.
 
Later,
Karl
----- Original Message -----
From: Chris Crouch
To: personal_submersibles@psubs.org
Sent: 18 December 1999 05:02
Subject: Re: [PSUBS-MAILIST] Fiberglass

Joe,
Epoxy resin on aluminum is a bad combination. The epoxy and Aluminum chemically react and over a short period of time (8-12 months) corrodes the aluminum. Ford had a problem with that several years ago on a window assembly, they ended up using a thin piece of titanium.
Chris
----- Original Message -----
From: Marsee Skidmore
To: Psubs
Sent: Saturday, January 15, 2000 9:19 AM
Subject: [PSUBS-MAILIST] Fiberglass

Gentlemen,
 
I've recently been pondering my fiberglass exoskeleton. Since I'm diving to 300 meters, I don't want to use wood for substructure. Can I glass over aluminum? Would fiberglass structural sections (tubes, I-beams) work? How would you build a 30 foot fiberglass cabin cruiser hull without wood?
 
Thanks,
 
Joe