Re: [PSUBS-MAILIST] acrylic viewport thickness

["C.Kem" <coalbunny@wyoming.com>]

Ok, I admit I don't know anything compared to you guys.  I once saw a basic schematic for a viewport.  It's kinda like a cone, with the tip cut off.  You have a "sleeve" on the hul it fits in snug.  Then put a epoxy in the sleeve and set the viewport in it.  Now place a "ring" around it on the outside, and bolt THAT to the hull.  I think if you drill any holes in the acryllic you compromise the integrity.  With this idea the water pressure increases the seal.  catch what I'm saying?
Carl


William Alford wrote:

At 10:20 AM 2/23/2005 -0500, Alec Smyth wrote: 

  

In regard to the cracking at the base, what we did on Solo s dome was machine
away the bottom several inches of material
    

just curious how you clamp, affix, etc the big piece of acrylic to do the
machining without damaging it or scarring it. And how was it done? Big lathe?
other method? thanks.
William Alford

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