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    Re: Bris Sextant Solar Filter
    From: Greg Rudzinski
    Date: 2016 Jun 15, 13:55 -0700

    Josh,

    The Bris sextant shouldn't need use of welding glass. The images used are dimmed by several reflections. I use the 5,6,7, and 8th reflected Sun image on my home made microscope slide Bris. The base glass is a 52 mm camera filter (pick desired neutral density). A regular glass cutter and small diamond file should be all the tools needed.

    Greg Rudzinski

    From: Josh Paterson
    Date: 2016 Jun 15, 13:33 -0700

    Some friends and I have been trying to construct Bris sextants. We've been attempting to shape some welding glass for the solar filter piece, but since it's tempered it shatters when we try to score and break it. Is there an alternative to tempered glass? Or maybe a better way to shape tempered glass?

    Thanks!

       
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