Diffusion Glass for Enlarger

Discussion in 'Camera Building, Repairs & Modification' started by markbarendt, Nov 28, 2009.

  1. markbarendt

    markbarendt Subscriber

    Messages:
    7,704
    Joined:
    May 18, 2008
    Location:
    Beaverton, OR
    Shooter:
    Multi Format
    Okay,

    I just got a new-to-me Elwood 5x7 operating last night and I have just figured out how to find the sweet spot for aiming the light and my hot spot is manageable now but, the diffusion is still rough and varied.

    The old glass is cracked anyway so I'm looking for ideas on what to replace this with.

    BTW I tried a new style spiral CFL bulb to get a larger more diffuse source and that helped some but I can actually see the spirals of brightness on the base board, and the crack in the glass, and... you get the idea.
     
  2. Ian Grant

    Ian Grant Subscriber

    Messages:
    18,121
    Joined:
    Aug 2, 2004
    Location:
    West Midland
    Shooter:
    Multi Format
    My old Gnome enlarger had a frosted diffuser, just like a LF focus screen. So easy to make a new one. See david Vikers post today/yesterday.

    Ian
     
  3. markbarendt

    markbarendt Subscriber

    Messages:
    7,704
    Joined:
    May 18, 2008
    Location:
    Beaverton, OR
    Shooter:
    Multi Format
    Thanks Ian,

    I'm actually inspired by that post and may give that a try.

    I am also considering White Flashed Opal glass or using two layers of diffusion glass or grinding on both sides of a home made diffuser or a bulb that hides the element behind a guard or painting the bulb so the element can't shine directly on the diffuser.

    Didn't know what others had had success with.
     
  4. Lee L

    Lee L Member

    Messages:
    3,247
    Joined:
    Nov 17, 2004
    Shooter:
    Multi Format