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Mitre saw cutting path

Discussion in 'Tools and Materials' started by Lol999, 13 Feb 2021.

  1. Lol999

    Lol999

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    Hi, got a slightly curious one. I have a Metabo 216mm sliding mitre saw. Apart from the fact it needs regular adjustment to stay true it cuts well, all except when on a 45degree cut.
    Cut a 45 degree mitre on some 6" skirting board and there's a pronounced arc of the path before it straightens out.

    Everything seems tight and secure so I'm a bit lost as to where to start.

    Suggestions?
     
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  3. JobAndKnock

    JobAndKnock

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    Is your skirting cupped? (common flaw especially with softwood) Are you supporting the full length of the skirting properly?
     
  4. catlad

    catlad

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    A spinning blade can't cut curves
     
  5. JobAndKnock

    JobAndKnock

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    Nice theory. On that basis a saw blade on a table saw would never be able to hit the blade opening insert. Buy they can, and on the odd occasion, do just that. Worst offenders (in mitre saws) are the big 12in saws where the blade can visibly flex if making a cut where one side of the blade is in the material and the other isn't (e.g. a dust cut). The other thing you can get, especially if bevel cutting is flexing or bowing in the arm of the saw as the head moves outwards
     
    Last edited: 14 Feb 2021
  6. catlad

    catlad

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    Ok well I have 4 mitre saws and 3 circular saws and I have yet to come across any of my saws cutting curves, Although I don't own a 12" saw.
     
  7. johnny2007

    johnny2007

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    Don't press the blade on the wood.
    Let the blade cut slowly so it doesn't flex.
     
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