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Thread: Tool for tightening/loosening a shackle pin

  1. #1
    Join Date
    Jan 2014
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    Long Island, N.Y.
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    Default Tool for tightening/loosening a shackle pin

    This is the drum for the roller furler on my friends sailboat:


    He ask me to make a tool for installing and removing the shackle pin since there's no room to get your fingers in there:


    I started with this piece of stainless. The near end is counter bored from when I needed to make some washers. The blurry end is
    threaded 5/16-18:


    After polishing it up, I mounted it vertically using an aluminum V block and a piece of brass shim:


    Continued in next post ......

  2. #2
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    Then I milled a slot in the end to engage the flat end of the shackle pin:


    Another view of the end:


    I drilled through a piece of 3/4" dowel. I threaded it as deep as my tap would reach. Then I screwed the piece of stainless in
    allowing it to cut its own threads the rest of the way through. That made for a tight fit. Both ends received split washers
    that I bent straight so they would lay flat. I used split washers because I wanted something thick. A nut was tightly Loctited
    onto the end:


    Here it is completed, or so I thought:


    Continued in next post ......

  3. #3
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    The collar I cleverly left on the end prevented the shackle pin from seating deep enough for the threads to catch:


    So I turned off the collar and sanded off most of the machining marks:


    Now it's really completed:


    One last view:

  4. #4
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    Northwest Washington
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    Nice work on the tool. How do you keep track of it?

    That would be a good place to use an Avibanks push button pin into a non threaded shackle.

  5. #5
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    Sure looks much better than my piece of pipe flattened with FBH. (Fine Ball Hammer)

  6. #6
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    Quote Originally Posted by Ironwoodsmith View Post
    Nice work on the tool. How do you keep track of it?
    Agree a beautiful job on the tool. My next thought was to make a longer shackle bolt that you could reach.

    Tom

  7. #7
    Join Date
    Oct 2014
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    Have you done a float test to see if there is enough wood for it to float when he drops it over the side?

  8. #8
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    Quote Originally Posted by Ironwoodsmith View Post
    Nice work on the tool. How do you keep track of it? ...
    Thank you. We have some drawers in the cabin for storing important items like flares, zip ties, corkscrews, etc.

    That would be a good place to use an Avibanks push button pin into a non threaded shackle.
    Interesting though, but it's still buried pretty tight in a corner:

    Even if we found one that fits, it would probably still be awkward to remove.

  9. #9
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    Dec 2008
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    Nice job Rich. Looks great, AND works well.

  10. #10
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    Quote Originally Posted by MattiJ View Post
    Sure looks much better than my piece of pipe flattened with FBH. (Fine Ball Hammer)
    That's what my friend suggest doing. I told him I though his boat deserved better than that.

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