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  1. 20th February 2022, 03:25 PM #1
    Fallen Woodwork
    Fallen Woodwork is offline Senior Member
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    Default Impeller blade burrs

    Started assembling a 3HP dust extractor.
    20220220_115925.jpg20220220_120130.jpg20220220_120225.jpg

    I noticed the machine finish on the inner side entry and exit ends of each blade had about a 0.25mm burr at most.
    Easier to feel than photograph but you can see the light reflecting at the exit end on the first and 2nd images.
    3rd image is the leading/entry edge

    The back side of each blade is totally smooth

    Is there any point giving these a tickle up and filing these smooth to improve efficiency or will they eventually wear down themselves?
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  3. 20th February 2022, 03:34 PM #2
    BobL
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    Default

    Quote Originally Posted by Fallen Woodwork View Post
    Is there any point giving these a tickle up and filing these smooth to improve efficiency or will they eventually wear down themselves?
    Wouldn't hurt but yes , depending on how abrasive the wood is that you end up working, they eventually will wear.
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  4. 20th February 2022, 03:43 PM #3
    Fallen Woodwork
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    Thanks for the quick reply Bob
    I'll give them a quick rub down just to get the burr off
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