23CII left to right alignment

Discussion in 'Darkroom Developing and Printing' started by Mike, Apr 25, 2004.

  1. Mike

    Mike Guest

    Got myself 2 12x12" mirrors for $3 and scratched off a 1" circle on one to
    align.

    I easily adjusted the front-to-back negative stage alignment with the screw
    at the bottom of the focussing rails.

    However I couldn't find any screws for left-to-right negative stage
    adjustment. So I cut up a plastic 35mm container and used it as shims in
    between the baseboard and the column. I'm very close to perfectly aligned
    (but not perfect). Is another way to align in this direction?
     
    Mike, Apr 25, 2004
    #1
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  2. Mike

    Bruce Guest

    However I couldn't find any screws for left-to-right negative stage
    adjustment. So I cut up a plastic 35mm container and used it as shims in
    between the baseboard and the column. I'm very close to perfectly aligned (but
    not perfect). Is another way to align in this direction?
    My 23CII has a knurled knob directly on the front next to the red filter
    bracket. Loosening the knob allows you to swing the neg stage L or R and there
    is a white line to indicate center.


    _________________
    Ready, Fire, AIM.
    Bruce
    Brooklyn, N.Y.
     
    Bruce, Apr 25, 2004
    #2
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  3. Mike

    Mike Guest

    It swings the negative stage and not the lens? I've got the thumbscrew that
    allows me to tilt the lens left and right...but I'll have to go search for
    this knob if it exists.

    --Mike
     
    Mike, Apr 25, 2004
    #3
  4. Mike

    Bruce Guest

    Maybe I misread the question. Yes it swings the lens L & R to align the lens
    with/to the negative stage. It pivots on an axis but does not shift L or R.
    _________________
    Ready, Fire, AIM.
    Bruce
    Brooklyn, N.Y.
     
    Bruce, Apr 25, 2004
    #4
  5. Mike

    Bruce Guest

    PS
    Yes I did say negative stage in the first note, sorry, I meant lens stage.
     
    Bruce, Apr 25, 2004
    #5
  6. Mike

    Jim Phelps Guest

    Mike,

    The bracket that holds the whole head to the carriage with the large steel
    pin (the pivot point to tilt the head to horizontal projection) is the key
    to getting left and right alignment of the negative stage. I hat to pull
    the pin and remove the head so I could modify this bracket. What I needed
    to do was to remove the bracket and enlarge the holes in the bracket to give
    me a bit of room. I just drilled them bigger, but no too big. Don't need
    that much play and you don't want to weaken the bracket by removing too much
    material.

    Use good steel washers and new hardware to replace the existing screws
    that hold this bracket to the carriage. I used cap screws (the kind you use
    with an allen wrench). Made it easier to get at when everything is
    reassembled.

    Now, to adjust right to left of the negative stage, loosen one (or both)
    so the screws and you can twist the head a couple of degrees to get your
    alignment. I don't have to tell you to tighten the screws, but who knows
    who else is reading this:~).

    One other thing, replace the plastic screw below the lens stage. Use a
    good metal screw.

    Jim
     
    Jim Phelps, Apr 25, 2004
    #6
  7. Mike

    John Walton Guest

    ...and that's why I gave away my 23C -- note that the rails on which the
    trolley rides must be perfectly parallel for the 23C to remain in alignment.
     
    John Walton, Apr 27, 2004
    #7
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