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  1. #1
    BradS's Avatar
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    How to clean out hardened grease from focus track?

    I have a very nice older wooden 4x5 field camera. The focus rack and pinion assembly appears to be in need of some routine maintenance. I think it just needs to have the old, dried up hardened grease/lube removed and maybe, some new lube.

    I'd like to clean out the old grease without damaging the wood finish...any suggestions?

  2. #2
    Mainecoonmaniac's Avatar
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    Is there a way to remove the hardware?
    "Photography, like surfing, is an infinite process, a constantly evolving exploration of life."
    Aaron Chang

  3. #3

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    I would get as much off as you can mechanically with toothpicks or similar wood or plastic probes, then follow up with a cloth or perhaps Q-Tips or more toothpicks sparingly moistened with a solvent like paint thinner.
    If the finish is lacquer or shellac a petroleum a solvent like the thinner shouldn't damage it, OTH alcohol will attack shellac, and lacquer thinner will soften lacquer.
    Though with either, just letting the solvent evaporate should get the finish back to where it was, assuming nothing like finger prints,dust or water (rubbing alcohol) gets in it during the process.

  4. #4
    fotch's Avatar
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    Probaly a dumb question however, let me ask, can you take it apart so you only have metal parts to clean?
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  5. #5
    Sirius Glass's Avatar
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    Quote Originally Posted by bdial View Post
    I would get as much off as you can mechanically with toothpicks or similar wood or plastic probes, then follow up with a cloth or perhaps Q-Tips or more toothpicks sparingly moistened with a solvent like paint thinner.
    If the finish is lacquer or shellac a petroleum a solvent like the thinner shouldn't damage it, OTH alcohol will attack shellac, and lacquer thinner will soften lacquer.
    Though with either, just letting the solvent evaporate should get the finish back to where it was, assuming nothing like finger prints,dust or water (rubbing alcohol) gets in it during the process.
    For get disassembling, that can get you in deep $#!+. Do what he said.
    Warning!! Handling a Hasselblad can be harmful to your financial well being!

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  6. #6
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    White spirit (UK) or mineral spirits (US) is relatively mild, it will not affect many wood finishes once these are fully dried. It will soften the waxy residue left when the lighter oils evaporate off from grease.

  7. #7

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    I would be tempted to start with a somewhat mild water based degreaser.
    "Far more critical than what we know or do not know is what we do not want to know." - Eric Hoffer

  8. #8
    BradS's Avatar
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    geez...tooth picks and mineral spirits... thanks guys. I don't know what's going on with my memory...I've done this before on several previous cameras. I guess my brain was switched off this morning or something! Anyway, I've cleaned out the tracks and the focus movement is so much smoother and easier now. There was...I think a thin layer of wax build up.

    All good to go now...and such a sweet camera!

    Thanks !

  9. #9
    BradS's Avatar
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    This is the result of toothpick alone
    Click image for larger version. 

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ID:	62688

  10. #10

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    Stiff toothbrush, Dawn detergent, hot water.

    NWG

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