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    Re: Re Re: Dream Choice of Sextant
    From: Jared Sherman
    Date: 2005 Aug 12, 18:24 -0400

    Alex-
     I'm not suggesting a titanium frame would be better. I suspect that it
    would be stiffer and MUCH lighter compared to either aluminum or brass. I
    have no idea about thermal properties. It would also be corrosion resistant
    and salt, etc., should not be able to wear any gear teeth in it. I suppose
    you could work it practically by using waterjet or laser cutting on a
    titanium plate (instead of casting it--I have no idea if you can feasibly
    cast titanium) but I'm told a typical foot square titanium alloy plate 1/4"
    thick is worth about $400 as sheet metal. Surely, that would put it in the
    Nieman-Marcus catalog. Even without engine-turning, anodizing, and
    bejeweling.
    
    I can just see them on eBay now: "RARE FABREGE SEXTANT!" 
    
    If anyone wants to build their own sextant frame of titanium, there's an
    online machine shop at http://www.emachineshop.com that will give you free
    CAD software and then actually machine the parts from your drawing and ship
    them to you. Not cheap--but an unusual resource. Includes cost estimates on
    each job, so you can actually see what "just" using something like Titanium
    plate instead of bronze would cost you.
    
    
    

       
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