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    Re: Bubble sextants on e-bay
    From: Michael Dorl
    Date: 2009 Jun 07, 09:30 -0500

    douglas.denny{at}btopenworld.com wrote:
    > It is to mark both sides with the shape required using a diamond then crush 
    the glass from the outside inwards to the line marked carefully with 
    'snuffers'  - pliars which could have a sideways movement too thus crushing 
    and 'grinding' away the glass at the same time. The diamond marking stops 
    cracks propagating past into the required area of glasss ...if you are lucky!
    Never heard the word snuffer but decorative glass worker use grozing 
    pliers for this kind of glass nibbling.  You'll find them for sale at 
    stained glass stores and on the web at lots of places.
    
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