Riving knife

[John Danner]

I was given a Powermatic Artisans table saw. The blade guard was already off and I don't plan on putting it back on. This is my first table saw and while I have read about what causes kickback I know I am likely to be surprised some time or other. Could anyone point me to a retailer that sells a riving knife that would fit this saw? The saw was my father in law's and he always ran it without safety items but I think a riving knife is something that would not interfere with what I want to do. Open to comments though.

[Brian Effinger]

No one (that I know of) makes an aftermarket riving knife. If the saw didn't have one from the factory, you can't fit one to it. The only option is a splitter which doesn't move like a riving knife. I've heard great reviews for the shark guard which is a splitter and blade guard. Just do a search for them here.

[Prashun Patel]

Google Bolt On Riving Knife.

I believe the guy's name is Bob Ross? He makes them that mount on many saws. Unfortunately, none for my Jet JPS10 :(


http://shop.walnutacrewoodworking.com/category.sc?categoryId=2

[Jack Ellis]

Several nice things about Shark Guards if you can get one for your saw. They're easy to remove when necessary. They improve dust collection. They're usually better made and more durable. You're more likely to operate with the guard on rather than off. I've just ordered one for a new cabinet saw.

If you live in the East Bay, we've met before!

[Nissim Avrahami]

The blade guard was already off and I don't plan on putting it back on.
Of course you can do whatever you want..........

It's just that personally, I don't like to see posts like those below...

http://lumberjocks.com/projects/14121

http://lumberjocks.com/projects/14130

http://www.sawmillcreek.org/showthread.php?t=76081&highlight=bosch+4000&page=2
(Post # 17 by Ian Haywood...Click on the Photobucket links to see the pics...

niki

[scott spencer]

I spotted this on another forum and "plucked it".

Current status of Bolt-On Ripping Knife (****) and which saws it will fit.

Grizzly1023 R & L Tilt The original; fits like a glove

Delta Unisaw R & L Tilt Some R tilts need to be fiddled with

Craftsman Hybrid (Zip Code Saw) Good to go

Jet Hybrid (Super Saw) Good to go

Steel City Hybrid Good to go

Grizzly Contractor Saw Good to go

Delta Contractor Saw 36-979 Good to go

Jet JTAS Cabinet L Tilt Unit is being evaluated by a busy man

Craftsman 113.xxxxxx Contractor Saws Waitng for pics and specs.

Ridgid Contractor Saws Waiting for pics and specs.

DeWalt Hybrid Looks a lot like the 113.xxxxxx in the parts drawing.


Since he has one for the Grizzly contractor saw, there's a possibility that the same unit will fit the PM64a....the Griz, GI, and PM64 have similar guts. Take your blade off, lower the arbor and send him some good pics...he'll let you know if it'll fit or not.

http://walnutacrewoodworking.com/

[Ken Deckelman]

From the description:

The **** is a bolt-on device that will mimic the action of a riving knife. It is easily adjusted to match saw blade height and it can be removed easily.

I don't think it moves with the blade, you would have to set it to the proper height each time you change the blade height?:confused:

[Shawn Buonarosa]

I think it does act like a true riving knife actually, I saw a picture of it and it looked like it does bolt to the arbor.

[scott spencer]

From the description:


I don't think it moves with the blade, you would have to set it to the proper height each time you change the blade height?:confused:

:) Moves up, down, and tilts with the blade without adjustment each time. The biggest difference between theaB.OaR-K and a stock riving knife is that an RK moves vertically, as opposed to following the arc of an American saw's arbor that the Bolt On must follow.

[Mike Wellner]

I would like to put on my Delta 34-444

[Jim O'Dell]

:) Moves up, down, and tilts with the blade without adjustment each time. The biggest difference between theaB.OaR-K and a stock riving knife is that an RK moves vertically, as opposed to following the arc of an American saw's arbor that the Bolt On must follow.


As I understand the B O R K from reading the threads on it, is that at certain blade heights, the height of the knife may have to be adjusted to be below the top of the blade. Small price to pay to add a riving knife like safety feature to an existing saw. Jim.

[scott spencer]

As I understand the B O R K from reading the threads on it, is that at certain blade heights, the height of the knife may have to be adjusted to be below the top of the blade. Small price to pay to add a riving knife like safety feature to an existing saw. Jim.

I believe that's accurate Jim...due to the arc path that the swing arm takes, the knife pivots around the blade a bit so the knife's position relative to the blade will change slightly. If the knife is even with the blade height at 1-3/4", it'll be slightly above the blade at 2-3/4", which may or may not require an adjustment depending on what you're doing. Or you can set the blade so that it's even with the top of the blade at full height, and slightly below for anything less than full height so it doesn't need any adjustment, which is how mine's set.

[keith ouellette]

Of course you can do whatever you want..........

It's just that personally, I don't like to see posts like those below...

http://lumberjocks.com/projects/14121

http://lumberjocks.com/projects/14130

http://www.sawmillcreek.org/showthread.php?t=76081&highlight=bosch+4000&page=2
(Post # 17 by Ian Haywood...Click on the Photobucket links to see the pics...

niki

Glad you posted that nissim. I do not have a riving knife or a guard and now I want one. It also reminded me of a close call I had.

It hard to imagine how bad having your ring finger "shaved to the bone" would hurt during recovery. surprised the guy didn't go into shock.