Grinding GG Glass to precise size?

Discussion in 'Miscellaneous Equipment' started by EASmithV, Jan 25, 2012.

  1. EASmithV

    EASmithV Member

    Messages:
    1,926
    Joined:
    Aug 22, 2008
    Location:
    Maryland
    Shooter:
    Multi Format
    I bought a nice looking GG from China a while back. It has the markings for every roll film back format known to man, which is really nice. However, it was designed for a Wista / Toyo, so it needs about 1.5-2mm ground off either side to fit my Graflex.

    Does anyone have on tips on grinding glass? I was going to use the disc side of a belt sander with the finest size sandpaper I could find and a spray bottle of water.
     
  2. Photo Engineer

    Photo Engineer Subscriber

    Messages:
    25,908
    Joined:
    Apr 19, 2005
    Location:
    Rochester, NY
    Shooter:
    Multi Format
    For that much you may need to use a glass cutter or the professional services of a glazier. That is a lot to grind off IMHO.

    PE
     
  3. John Koehrer

    John Koehrer Subscriber

    Messages:
    6,463
    Joined:
    Apr 3, 2004
    Location:
    Montgomery,
    Shooter:
    Multi Format
    Or a 400 grit wet or dry sandpaper.
    Use it wet, It will take a little while <hr but trying to cut 1-2mm with a glass cutter needs some experience. It's not scoring the glass, it's how the hell do you grab that 2mm edge to snap it off?
     
  4. jnanian

    jnanian Advertiser Advertiser

    Messages:
    20,227
    Joined:
    Jun 21, 2003
    Location:
    local
    Shooter:
    Multi Format
  5. cowanw

    cowanw Member

    Messages:
    1,302
    Joined:
    Aug 29, 2006
    Location:
    Hamilton, On
    Shooter:
    Large Format
    A belt sander will be fine, no water. The only difficulty is staying straight so hold it long ways against the middle of the sander. Do a 30 degree sand on one side, turn over and do a 30 degree sand on the other side and then a 90 degree sand between the two. Then test it and so on.