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Thread: keeping setscrew holes clean of sawdust and crud.

  1. #1
    Join Date
    Sep 2016
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    Modesto, CA, USA
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    keeping setscrew holes clean of sawdust and crud.

    I am taking apart an old tablesaw to clean it up. I have spent a lot of time with a dental pick removing caked in sawdust and oil from allen head screws before trying to remove them. I find if I do not do this thougrhly I risk rounding of fthe socket and having to dril lout the screw. For painting I covered the holes with little round magnets so the sockets stay clean.
    After I was done I realized I can leave them in place and next time there will not be much to clean out. Obvioulsy only usable on slow speed stuff not on motor driven pulleys.
    Bil lD.

    PS: I like Al foil for preventing overspray on weird shaped bits.
    Last edited by Bill Dufour; 05-06-2019 at 8:41 PM.

  2. #2
    Join Date
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    Maybe caulk the holes to keep them clean. The caulking should clean up easily.

  3. #3
    Join Date
    Feb 2008
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    E TN, near Knoxville
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    I wish there were little rubber plugs the fit tightly.

    What I do is blast them with compressed air, blows out sawdust, oily sawdust, anything.

    JKJ

  4. #4
    Join Date
    Mar 2003
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    SE PA - Central Bucks County
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    John, I bet that something like "space balls" that are used to space panels in cabinet doors, etc., might be just the right size for many such hex screw holes.
    --

    The most expensive tool is the one you buy "cheaply" and often...

  5. #5
    Join Date
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    There are several sources for plugs for setscrew holes. Here is one
    hole_plugs.jpg
    Lee Schierer
    USNA '71
    Go Navy!

    My advice, comments and suggestions are free, but it costs money to run the site. If you found something of value here please give a little something back by becoming a contributor! Please Contribute

  6. #6
    Join Date
    Apr 2017
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    Tucson, Arizona
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    I like the idea of giving them a blast from the compressed air blow gun to clean out the inside of the hex recess in the setscrew. This not only works for wood dust accumulation, but also for some of the setscrews in some of the older cars I have restored. With the cars - I usually spray some WD40 or equivalent first to loosen it up. Then the blast of air to clean it out.
    David

  7. #7
    Quote Originally Posted by John K Jordan View Post
    I wish there were little rubber plugs the fit tightly.
    There are. Check on amazon for "powder coating plugs and caps", lots of good stuff there.

    I've spent a lifetime never throwing out any plug or cap I ever come across, and have a big box of them. Very useful habit.

    Ditto on the compressed air, as long as the debris is not too oily.

  8. #8
    I use compressed air as well, never had one where it didn't clean it out almost immediately.

  9. #9
    Quote Originally Posted by lowell holmes View Post
    Maybe caulk the holes to keep them clean. The caulking should clean up easily.
    Though silicone caulk should work if you want something a little easier to clean out when needed, consider using some hot melt glue. It will fill the hole and grip into the threads yet I think it is easier to pull out with a pick when desired. Second idea is just put a 2d allen screw in the hole to keep the hole clear, just Loctite it so it doesn't back out.

  10. #10
    Since set screws have a standard thread, why not top off the bore with a Phillips head screw. You may have to take a standard length and shorten it to fit. Darn!1i probably could have gotten a hundred bucks for this idea.

  11. #11
    There is also a product called SEAL 'N PEEL used for weatherstripping that might work for temporary plugs.

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