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Riving knife vs splitter

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Forum topic by Plain posted 07-05-2016 04:58 PM 530 views 0 times favorited 8 replies Add to Favorites Watch
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Plain

157 posts in 164 days


07-05-2016 04:58 PM

To clear the confusion some members of the forum have here is some bad sketches of a splitter and a riving knife. The biggest difference is that rinving knife is engaged at all times unless you are cutting some very thin stock in which case there is danger area for a fracture of an inch. With a splitter the possibility of kickback is much higher as it is too far from the blade in most cases and secondly because it is strictly vertical so there is no part that catches the wood before it even leaves the blade.

Besides that riving knives also have the following advantages:

Height is always the same as the blade height, allowing it to be used with non through cuts.
When the blade is tilted the riving knife tilts with it.
Most of the time it is much convenient to install/remove so the operator does not give up on it.


8 replies so far

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toolie

2025 posts in 2094 days


#1 posted 07-05-2016 07:58 PM

All of what is described is not true when considering the splitters that were OEM equipment on the Ridgid and c-man 113 contractor saws. Those splitters conformed to the shape of the blade, were as far from the blade as current day riving knives and tilted with the blade. They also contained anti kickback pawls, which rescued me on more than one occassion.

-- there's a solution to every problem.......you just have to be willing to find it.

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Plain

157 posts in 164 days


#2 posted 07-05-2016 08:05 PM

Then they were riving knives not splitters even if someone called them so.

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MrUnix

4234 posts in 1665 days


#3 posted 07-05-2016 09:33 PM

A splitter is a splitter, even when it’s called a riving knife.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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Plain

157 posts in 164 days


#4 posted 07-05-2016 09:39 PM



A splitter is a splitter, even when it s called a riving knife.

Cheers,
Brad

- MrUnix

Here is what Delta thinks about it:

A Table Saw “Spreader” (also commonly called a “splitter”), is mounted to the saw’s rear trunion causing its height to be stationary.

The riving knife is mounted directly to the table saw’s arbor bracket so that the riving knife tilts and also moves up and down with the blade. It is also typically fitted closer to the back edge of the blade than many spreaders

http://www.deltamachinery.com/faq/420-what-is-the-difference-between-a-table-saw-splitterspreader-and-a-table-saw-riving-knife

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MrUnix

4234 posts in 1665 days


#5 posted 07-05-2016 09:41 PM

Yup, and from that same FAQ blurb:

A Table Saw “Riving Knife” serves the same purpose as a “spreader”

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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Plain

157 posts in 164 days


#6 posted 07-05-2016 10:54 PM


Yup, and from that same FAQ blurb:

A Table Saw “Riving Knife” serves the same purpose as a “spreader”

Cheers,
Brad

- MrUnix

Of course it is the same purpose – to fight kickback. Still a riving knife is not the same as a splitter and does is much more efficiently , to the point that all table saws produce after 2009 must be furnished with a riving knife ( not a splitter).

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cabmaker

1507 posts in 2275 days


#7 posted 07-05-2016 11:50 PM

Thank goodness all of my equipment is pre 2009

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toolie

2025 posts in 2094 days


#8 posted 07-06-2016 12:20 AM


Yup, and from that same FAQ blurb:

A Table Saw “Riving Knife” serves the same purpose as a “spreader”

Cheers,
Brad

- MrUnix

Of course it is the same purpose – to fight kickback. Still a riving knife is not the same as a splitter and does is much more efficiently , to the point that all table saws produce after 2009 must be furnished with a riving knife ( not a splitter).

- Plain

Not sure I agree with the ” and does it more efficiently” comment. The splitter I referenced has been excellent at preventing kickback whenever I’ve used it. But Irving knives are a better feature of newer saws.

-- there's a solution to every problem.......you just have to be willing to find it.

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