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Thread: Prepare threaded rod and nut for epoxy

  1. #1
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    Prepare threaded rod and nut for epoxy

    Hi,

    This is a follow-on to my other thread about using a coupling nut with a threaded rod for a leveling platform for a job-site table saw. I want to be able to use epoxy to permanently affix two nuts (one above and one below the platform with the table saw on it) to the threaded rod. What do I need to do to prepare the rod and nut so that the epoxy will best be able to bond to the material?

    Thanks,

    Rob

  2. #2
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    would locktite red work

  3. #3
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    I already have some West Systems G/Flex epoxy which they say should work. But the threads appear to have some sort of lubricant on them which I assume needs to be removed where the nuts will get epoxied into place. I assume some sort of cleaner/solvent and toothbrush...

  4. #4
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    I would experiment to see how it works.

  5. #5
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    Quote Originally Posted by Rob Marshall View Post
    I already have some West Systems G/Flex epoxy which they say should work. But the threads appear to have some sort of lubricant on them which I assume needs to be removed where the nuts will get epoxied into place. I assume some sort of cleaner/solvent and toothbrush...
    Hi Rob,
    I would recommend cleaning the parts with lacquer thinner. Pour some of the lacquer thinner into a jar, then put the nuts and the ends of the rods into the jar and use a small brush to thoroughly clean them. I would use Loctite blue 242 thread locker to attach the nuts to the rods. The 242 is removable just in case you need to make some changes later.
    David

    https://www.amazon.com/gp/product/B000I1RSNS/ref=ppx_yo_dt_b_asin_title_o06_
    s00?ie=UTF8&psc=1

    loctite 242.jpg
    Last edited by David Buchhauser; 07-24-2019 at 5:43 PM.

  6. #6
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    You could also drill a hole through both the nut(s) & the rod & use a press fit pin to hold the assembly tightly in place.
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  7. #7
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    If I'm reading the description of the Loctite blue correctly, it probably wouldn't be appropriate for what I want to do since I want to permanently attach the nuts and the loctite seems to allow for removing them.

    As to drilling a hole, I don't have a drill press and I don't know if I would be able to hold the drill steady enough to drill a straight hole through both the nut and rod. Although, if I did have a drill press, that seems like a good way to do it.

    Thanks,

    Rob

  8. #8
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    You could also use 2 nuts to lock together

  9. #9
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    Quote Originally Posted by Rob Marshall View Post
    If I'm reading the description of the Loctite blue correctly, it probably wouldn't be appropriate for what I want to do since I want to permanently attach the nuts and the loctite seems to allow for removing them.

    As to drilling a hole, I don't have a drill press and I don't know if I would be able to hold the drill steady enough to drill a straight hole through both the nut and rod. Although, if I did have a drill press, that seems like a good way to do it.

    Thanks,

    Rob
    The blue loctite will lock the threads and not come loose unless you put some wrenches on the nuts and force them loose. Otherwise, I would recommend using some Nyloc nuts. These are lock nuts with nylon inserts that will not come loose unless you force them with wrenches. You could also "double-nut" as was suggested earlier.

    If you really want to "permanently" attach the nuts to the rods, then I would suggest welding them together.

  10. #10
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    Acetone should clean them.

  11. #11
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    Any decent degreaser should work -- brake cleaner, acetone, lacquer thinner, etc.

  12. #12
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    Quote Originally Posted by Jerome Stanek View Post
    You could also use 2 nuts to lock together
    +2 . . . Use a jam nut.

  13. #13
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    Rob if you want permanent no movement then red loctite is the one to use. The blue would probably work as well as others have said. Pick one they are both a way better option than epoxy.

  14. #14
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    Since I have some left over parts from my initial failed attempt with a 3/4"-10 rod, I will try to clean them with acetone and try the loctite red and see how that works. I wasn't sure if it needed the primer/activator but I ordered some of that as well just in case.

    Thanks,

    Rob

  15. #15
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    Brake cleaner at the auto parts store is a good metal cleaner. And cheap. Loctite makes good products for your application. The red would be better for the larger bolt thread 3/4 10.

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