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  1. #1
    Gustavo_Castilla's Avatar
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    Need some #500 Carborum grit

    Hi I need to work on my groung glass and I do not know where to find the #500 Carborum grit
    Thanks Gustavo@gcastilla.com
    Gustavo Castilla
    We are not moved by things ,
    but by the views we take of them.
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  2. #2

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    You might try MSC Industrial Supply in NY. Their web address is www.mscdirect.com

  3. #3
    Mateo's Avatar
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    You can also try Daniel Smith or Dick Blick art supply
    "If I only had a brain"-Some badly dressed guy made of straw in some movie I think I saw

  4. #4
    Dave Parker's Avatar
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    As I posted to your classified ad, your best place to try is your local rock/hobby shop as this material is used in the tumbling of rocks and stuff.

    Dave

  5. #5
    Donald Qualls's Avatar
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    Depending how much you need, you might also try http://www.gotgrit.com/ -- they sell primarily to telescope makers for optical grinding, so the quantities might be a bit large, but they're certain to have what you want. If you're making a ground glass, you could probably finish the whole job with a 35 mm film can full (I used less than that in this size for an 8" telescope mirror, though the surface was ground to 320 before I started with the 500). The lapidary shops will almost certainly sell in a minimum of a half pound, too, so take your pick...
    Photography has always fascinated me -- as a child, simply for the magic of capturing an image onto glossy paper with a little box, but as an adult because of the unique juxtaposition of science and art -- the physics of optics, the mechanics of the camera, the chemistry of film and developer, alongside the art in seeing, composing, exposing, processing and printing.

  6. #6

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    Wet dry saning paper.

    You can get some wet/dry slicone carbide sanding paper in 400 or 600 grit. It's used for polishing wood n metal, will cut glass just as easily. Home Depot has it, it a dark gray color.

    If you can't find any, e-mail me, I'll send you a sheet.
    Anyone can make a Digital print, but only a photographer can make a photograph.

  7. #7
    Ole
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    Just a little hint if you try a Google search: It's carborundum.
    -- Ole Tjugen, Luddite Elitist
    Norway

  8. #8
    Donald Qualls's Avatar
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    Quote Originally Posted by Ole
    Just a little hint if you try a Google search: It's carborundum.
    Also known as silicon carbide, BTW; Carborundum is a brand name.
    Photography has always fascinated me -- as a child, simply for the magic of capturing an image onto glossy paper with a little box, but as an adult because of the unique juxtaposition of science and art -- the physics of optics, the mechanics of the camera, the chemistry of film and developer, alongside the art in seeing, composing, exposing, processing and printing.

  9. #9
    MattCarey's Avatar
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    Quote Originally Posted by Donald Qualls
    Also known as silicon carbide, BTW; Carborundum is a brand name.

    Interesting--I kept thinking in my mind "corundum", which is the structure of sapphire.

    I would bet that the guys who trademarked "Carborundum" had the similarity in mind.

    Matt

  10. #10
    Struan Gray's Avatar
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    You can also get the grit from Car DIY and workshop stores: it's sold as valve-grinding paste for lapping the valves and valve seats when you've run your old engine on lead-free petrol a bit too long.....

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