Thread: Width of riving knife to blade kerf

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

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

Hi Coffee

Maybe this one will help

niki

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

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.

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

Originally Posted by China

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

That's my understanding of what's what, except change "blade" for "kerf".

Donald