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Thread: Predictive maintenance on staight blades for the jointer and planer

  1. #1
    Join Date
    Jan 2009
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    Indianapolis
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    Predictive maintenance on staight blades for the jointer and planer

    Currently I go by feel, and sound on my blades for when it is time to replace them or when there are noticeable nicks in the blade(s). Thinking about whether there is a way to track wear by board feet, no idea based on variation of board width, without literally writing everything down and logging it or keeping track of how many times I empty my dust collect and going by this.

    Anyone track wear for predictive maintenance that is not a business shop?

    Thanks.

    Brian
    Brian

  2. #2
    Join Date
    Nov 2009
    Location
    Peoria, IL
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    You would have to develop a wear graph on many different species unless you don't use more than one species.

  3. #3
    Join Date
    May 2018
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    Lancaster, Ohio
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    I change based on looking at the knife for visible dulling, nicks, and how it cuts. Planer same way. worked for over 40 yrs that way, too old to change now.
    Ron

  4. #4
    Join Date
    Nov 2012
    Location
    North Dana, Masachusetts
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    489
    Some things you change on an as needed basis, other things get changed whether they need it or not.

    truck oil
    jointer knives
    calendar pages
    computer passwords
    air filter
    underwear
    planer knives
    clocks for daylight savings time
    relationship status on Facebook
    my mind
    blinker fluid
    sand paper on my sander

  5. #5
    Join Date
    Sep 2016
    Location
    Modesto, CA, USA
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    9,989
    You could put an hour gauge on the machines and use that. Modern ones are vibration sensing so no need to cut and splice the main motor wiring. I think they would even work on a dust collector for filter changes.
    Bill D.

  6. #6
    Buy top quality knives. M2 and T1 are good . Send stuff through the planer at high speed . Too many think slow feed saves sharp.NO !
    Avoid venders who say their cheap knives have “ same hardness” as M2 There is no viagra for steel, Look at the grain and send the right end through. Sometimes it’s hard to tell, check direction with pocket knife if needed . When material is really dicey it’s ok to try
    slower speed.
    Last edited by Mel Fulks; 02-24-2024 at 1:00 PM.

  7. #7
    Join Date
    Nov 2009
    Location
    Peoria, IL
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    Slower feed won't save sharpness, but it will certainly produce a better surface with more cuts per inch and require less sanding latter.

  8. #8
    Quote Originally Posted by Richard Coers View Post
    Slower feed won't save sharpness, but it will certainly produce a better surface with more cuts per inch and require less sanding latter.
    Right On ! Thanks ,Richard ! I gave my editor the day off !

  9. #9
    Join Date
    Jun 2008
    Location
    So Cal
    Posts
    3,769
    Hereís my advice regarding jointer knives.
    Itís not a machine for cleaning dirty wood.
    Instead of taking many many small passes try taking one bigger bite. Saves wear on knives
    I change my knives when the feed pressure get noticeably higher. Same goes with a hand plane when it take more muscle to push time to sharpen.
    Good Luck
    Aj

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