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10th March 2007, 06:15 PM #1Intermediate Member
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Width of riving knife to blade kerf
I've recently upgraded from a Triton to the Jet Supersaw, Euro version. The saw came with a 3mm blade and I have a triple chip blade with a 3.2mm kerf that I want to use. The riving knife on the saw is 2.3mm. Does the one thickness riving knife work for all blades, or do you need to use different sized riving knives for some blades?
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10th March 2007, 06:25 PM #2SENIOR MEMBER
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Width of kerf is greater than the thickness of the riving knife
The thickness of the riving knife is greater than the thickness of the saw plate.
I'd be using a 2.5mm riving knife or so, as I'm """GUESSING""" that the thickness of the saw plate is 2.2mm, pretty close to 2.3mm
Cheers,
eddie
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10th March 2007, 07:06 PM #3Intermediate Member
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Eddie thanks for your advice. I assume that the saw plate is the saw body. The blade that came with the saw has a 2mm body and the blade that I want to use is 2.2mm body, so from what your saying I need a wider (2.5mm) riving knife.
Any idea where you buy riving knives? Can't say I've ever seen them advertised, but then I've never needed to use one before, so not an item that I've ever been much aware of.
cheers Coffee
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10th March 2007, 07:52 PM #4Deceased
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Hi Coffee
Maybe this one will help
niki
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10th March 2007, 07:57 PM #5SENIOR MEMBER
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Hi Coffee,
No idea, I'm afraid, I'd get it custom cut at Leuco.
But, a cheaper option might be to ask the local agency if they carry spare riving knives in a variety of thicknesses.
Before you buy one, I'd ask their opinion on a 2.3mm riving knife with a saw plate at 2.2mm. Not out of the question, but not much margin for error.
Cheers,
eddie
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10th March 2007, 09:17 PM #6GOLD MEMBER
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I think you'll find that if:
Riving knife < saw kerf =
Riving knife > saw kerf =
The knife is there to stop the wood from deciding to bend too far out of shape and/or hit the back of the blade as it comes up out of the table. If the knife is too close to the size of the kerf you are likely to run the open end of the cut into it & have the wood jam/stop.
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10th March 2007, 09:23 PM #7China
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The riving knife simply stops the cut closing on the blade, the back of the riving knife should be slightly thicker than the blade and tapers forward to be thinner than the blade
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10th March 2007, 09:35 PM #8Member
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