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    Re: C. Plath Sextants Mirror Adjustment
    From: Jared Sherman
    Date: 2003 Sep 17, 11:16 -0400

    Kieran-
     I am not in the sextant business but have some experience with lubricants and 
    cleaning. Careful use of a toothbrush (or smaller brush) and q-tips together 
    with most common solvents or some Liquid Tide laundry detergent will remove 
    most older greases and lubricants. They will not harm the typical enameled 
    metal finish on a sextant although I would take care around plastic parts, 
    etc.
     Once clean I would suggest using either a lubricant or an anti-corrosion 
    material. The latter would include tefgel (a gel with teflon in it) or 
    NeverSeize (a petroleum compound with copper and nickel in it) both sold in 
    chandleries and intended to prevent corrosion between different metals.
     I wasn't so worried about corrosion but was bothered by the way old grease 
    congeals in the cold and makes a sextant useless in the winter. So when I 
    cleaned mine out I relubricated everything with DuPont Krytox, a totally 
    synthetic light white grease which is chemically related to Teflon. It comes 
    as a white oil and a grease, each about $5
       
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