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Thread: Zero Clearance Insert Question

  1. #1
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    Zero Clearance Insert Question

    Okay so I can make a ZCI for my saw, BUT.......that works fine when the blade is at 90 degrees to the table.

    Can a person make one for say a 22.5 degree cut and then if so how do you do it.

    I tried a variety of ways and gave up. Tried to use my 8 inch dado blade set to the same angle to cut a wider slot but for reasons that stumped me (i presume having to do with the anles) I could then not use my 10 inch bade in this slot. In the end gave up considered this tooooo dangerous to mess about with.

    Anyways is it possible?

    Thanks
    cheers

  2. #2
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    hey rob, put in new insert ,,have balde lowered to the max then set angle to where you want it.. clamp insert down and slooowly raise blade up threw it.. this will give you what your after but it wont work for a 90 degree cut just the angle you set your saw at.. then mark the insert for next time..
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  3. #3
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    Quote Originally Posted by larry merlau View Post
    hey rob, put in new insert ,,have balde lowered to the max then set angle to where you want it.. clamp insert down and slooowly raise blade up threw it.. this will give you what your after but it wont work for a 90 degree cut just the angle you set your saw at.. then mark the insert for next time..
    I think I tried that once Larry and it didn't work. When you lay the blade over to the angle you want it still comes up in the same plane as if it were at 90* to the table so the blade will try to go through the ZCI with the side of the blade pushing against the ZCI. That's the best I can explain it. Clear as mud??
    Aloha,

    What goes around, comes around.

  4. #4
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    you mean i am wrong again today man here i thought i had it all figured out looked good to me and i hadnt needed one set up for that..
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  5. #5
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    Quote Originally Posted by Royall Clark View Post
    I think I tried that once Larry and it didn't work. When you lay the blade over to the angle you want it still comes up in the same plane as if it were at 90* to the table so the blade will try to go through the ZCI with the side of the blade pushing against the ZCI. That's the best I can explain it. Clear as mud??
    Royall,
    I don't understand that at all. What Larry said is exactly how I've made mine. I have one at 22.5, and another for 45, and didn't have any problem at all making them.

    My saw is a Shop Fox cabinet saw. What's yours?

    Does your blade drop down enough to clear the underside of the insert, or does it rub?
    Jim D.
    Adapt, Improvise, Overcome!

  6. #6
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    I have several for frequently used angles. Route a stopped dado to allow for the angled blade position when dropping the insert in. The insert would have to approach at the angle of the blade without the dado. At 90* this is fine but at an angle, unless you saw is a lot different than mine; this ain't gonna happen:

    Click image for larger version. 

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    Another view:

    Click image for larger version. 

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    Cut slot as usual (this ones a bit thrashed, time for another):

    Click image for larger version. 

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    I do the same for the CMS:

    Click image for larger version. 

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    Last edited by glenn bradley; 04-05-2009 at 06:30 PM.
    Any sufficiently advanced technology is indistinguishable from magic.
    - Arthur C. Clarke

  7. #7
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    Quote Originally Posted by Jim DeLaney View Post
    Royall,
    I don't understand that at all. What Larry said is exactly how I've made mine. I have one at 22.5, and another for 45, and didn't have any problem at all making them.

    My saw is a Shop Fox cabinet saw. What's yours?

    Does your blade drop down enough to clear the underside of the insert, or does it rub?

    Jim Your right, my wrong!! Just run out to the shop and looked again. The blade does come up correctly and would work. I don't know what I did so long ago to make me think that but now I'm glad for this thread as now I'll be making more ZCI's. I've got a left tilt Unisaw now. The last time I tried it was with an old no name contractor's style TS. Either it didn't work back then because I did it wrong or there was something different with the way the old saw worked??? Good learning lesson for me though

    Sorry for the bad info Larry! See you weren't wrong twice after all! Just this old fart!
    Aloha,

    What goes around, comes around.

  8. #8
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    hey royall ,she has told me i was wrong so many times that i always believe it from where ever it comes even some stranded castaway
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  9. #9
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    Quote Originally Posted by larry merlau View Post
    \ even some stranded castaway
    I think that really sums it up!!
    Aloha,

    What goes around, comes around.

  10. #10
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    Quote Originally Posted by Royall Clark View Post
    I think that really sums it up!!
    ok now royal, its back to me being wrong,, try to take your new insert out and putting it back in again??? then glenn's wisdom prevails
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

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