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Thread: Where does one get custom ground glass from these days?

  1. #21

    Join Date
    Jan 2019
    Posts
    100

    Re: Where does one get custom ground glass from these days?

    One of the guys that used to do ground glass made it from Borosilicate glass. Anyone know where you can get that stuff? Seems like it would be better since it is clearer than float glass and stronger too.

  2. #22

    Join Date
    Jul 2013
    Posts
    77

    Re: Where does one get custom ground glass from these days?

    https://hopfglass.wordpress.com/

    Steve Hopf - maker of borosilicate ground glass.

  3. #23

    Join Date
    Jan 2019
    Posts
    100

    Re: Where does one get custom ground glass from these days?

    Thanks RK.

  4. #24

    Join Date
    Feb 2014
    Location
    Sydney, Australia
    Posts
    24

    Re: Where does one get custom ground glass from these days?

    Quote Originally Posted by R.K View Post
    https://hopfglass.wordpress.com/

    Steve Hopf - maker of borosilicate ground glass.
    Like I said at the beginning, I've not gotten any reply to my inquiry from Steve.

  5. #25

    Join Date
    May 2013
    Location
    Denver metro.
    Posts
    52

    Re: Where does one get custom ground glass from these days?

    Quote Originally Posted by PRJ View Post
    One of the guys that used to do ground glass made it from Borosilicate glass. Anyone know where you can get that stuff? Seems like it would be better since it is clearer than float glass and stronger too.
    Or one could buy-Borosilicate Materials by Schott
    BorofloatŪ glass is a clear and transparent colorless glass. Its excellent transmission and very weak flourescence intensities over the entire light spectrum make it ideal for a wide range of applications in optics, optoelectronics, photonics and analytical equipment. BorofloatŪ offers outstanding thermal resistance, exceptionally high transparency, high chemical durability and excellent mechanical strength.

    Michael

  6. #26

    Join Date
    Sep 2005
    Location
    Joyce, Washington
    Posts
    1,437

    Re: Where does one get custom ground glass from these days?

    It seems like borosilicate glass would be considerably more difficult to grind than float glass, curious if anyone has tried doing it by hand.

  7. #27

    Join Date
    Jul 2013
    Posts
    77

    Re: Where does one get custom ground glass from these days?

    When I contacted Steve a few years ago, I also wait for respond more than a few days. But finaly he did respond and made the glass in a few days.

  8. #28

    Join Date
    May 2013
    Location
    Denver metro.
    Posts
    52

    Re: Where does one get custom ground glass from these days?

    Quote Originally Posted by Colin Graham View Post
    It seems like borosilicate glass would be considerably more difficult to grind than float glass, curious if anyone has tried doing it by hand.
    I doubt that there would be a noticeable difference. Borosilicate is 1.5 Mohs harder than common glass, expands less, and doesn't heat treat well. So
    Little more grinding, possibly a bit more delicate in use.

    One thing is for sure, the only way that you will truly know anything is for you take a chance and give it a try. Go find out.

    Michael

  9. #29

    Join Date
    Sep 2005
    Location
    Joyce, Washington
    Posts
    1,437

    Re: Where does one get custom ground glass from these days?

    Yes, that one thing is for sure.

  10. #30
    3D-Stereo-Aeropanoramas
    Join Date
    May 2004
    Posts
    165

    Re: Where does one get custom ground glass from these days?

    Maybe Groundglass and Fresnel from 3s-krpc ebay. seller of Cosmic Circle cameras, 18° and other branded stuff. I have a fresnel only not yet checked ontop of Polaroid MP3-Groundglass. he told it cannot be cut. it will break. 100 x122mm
    Fresnel
    https://www.ebay.com/itm/KangRinpoch...s/201639246184
    Groundglass
    https://www.ebay.com/itm/4-x-5-Non-f...QAAOSwdC5cnJZe
    www.stereopan.tk
    3DStereo-Aeropanorama-Jungfraujoch

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