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Thread: plastic and metal

  1. #1
    Join Date
    Jan 2011
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    Montfort, Wi.
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    804

    plastic and metal

    I'm finding plastic and metal often stick. Two examples: I have some Greenworks battery tools and it's almost impossible for my wife and I to separate the pole saw sections and remove the battery (which is plastic on plastic) without a rubber hammer. The second is trying to remove new Delrin bushings from a mandrel. I have to hold it with a plyers, turn the lathe on and gently move it off. Is there a recommended lubricant for situations like this? Thank you.

  2. #2
    Join Date
    Feb 2008
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    E TN, near Knoxville
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    12,298
    Quote Originally Posted by Dave Fritz View Post
    I'm finding plastic and metal often stick. Two examples: I have some Greenworks battery tools and it's almost impossible for my wife and I to separate the pole saw sections and remove the battery (which is plastic on plastic) without a rubber hammer. The second is trying to remove new Delrin bushings from a mandrel. I have to hold it with a plyers, turn the lathe on and gently move it off. Is there a recommended lubricant for situations like this? Thank you.
    I use a smear of silicone grease.

  3. #3
    Join Date
    Jan 2018
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    Vancouver Canada
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    716
    I have also used dialectic grease for this kind of issue. Auto supply store.
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  4. #4
    Join Date
    Mar 2005
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    Quote Originally Posted by Dave Fritz View Post
    I have some Greenworks battery tools and it's almost impossible for my wife and I to separate the pole saw sections and remove the battery (which is plastic on plastic) without a rubber hammer.
    One thing about the GW batteries: the rails/tabs that the battery slides on aren't really the problem. The only time I have trouble removing a battery is when it isn't really stuffed in all the way. What I do to remove it is push it back in first (just a light whack with my palm) before I touch the release, works every time.

    You may notice that after the battery in inserted and locked, it's possible to pull it back a bit...not much, just a millimeter or so. What I think happens then is that the lock/release widget either doesn't release cleanly or ends up pushing the battery so it binds against the rails.
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