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Rivving knife

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  • 02-03-2016 3:39am
    #1
    delaney001
    Registered Users Posts: 431 ✭✭


    Just curious, I see a lot of American pictures or YouTube videos of table saws with no knife behind the blade.
    I have always assumed they're essential, is this not the case? Are they optional?
    One big advantage I can see of not having them is being able to cut tennon-shoulders.


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    #2
    recipio
    Registered Users Posts: 2,804 ✭✭✭recipio


    They are not essential if you use a bit of common sense. Most saws sold in the US still don't bother fitting one but they are an EU requirement on all new saws. I have an American saw and find that the only problem arises with wood movement in ripping boards when it begins to pinch the blade - just stop the cut and flip the board.A more efficient way of making tenons is to make a jig to ride on the fence and push the board over the blade in a vertical position.


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    #3
    the_pen_turner
    Registered Users Posts: 7,515 ✭✭✭the_pen_turner


    i wouldn't remove it.
    I cut the top off of mine to allow for half way through cuts. I then put a guard on an arm over the blade to collect the dust


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    #4
    recipio
    Registered Users Posts: 2,804 ✭✭✭recipio


    the_pen_turner wrote: »
    i wouldn't remove it.
    I cut the top off of mine to allow for half way through cuts. I then put a guard on an arm over the blade to collect the dust

    Does the guard not ride up and down with the blade. ? The problem arises with a narrow kerf blade when the kerf is too narrow to clear the guard.Having on overhead guard is great in theory but I like to see whats happening with the cut.


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    #5
    the_pen_turner
    Registered Users Posts: 7,515 ✭✭✭the_pen_turner


    the guard that came with it was attached to the riving knife and razed and lowered with the blade.
    I cut off the knife so that it didn't stick up past the top of the blade.
    the guard I have on mine is made by axminster in the uk and is clear.
    mine is a bit like this

    http://www.axminster.co.uk/axminster-industrial-series-tsce-12r-overhead-crown-guard-kit-508229


    you should get an appropriate sized knife when you get a thinner or thicker blade. they are a great safety feature


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