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Unisaw 34-459 - riving knife, splitter, guard

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Forum topic by bbc557ci posted 07-21-2013 04:11 PM 2241 views 0 times favorited 15 replies Add to Favorites Watch
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bbc557ci

548 posts in 820 days


07-21-2013 04:11 PM

Hi all. I’m back with hat in hand, once again, asking questions about my newly acquired Unisaw model 34-459.

I’ve been reading threads on LJ’s about riving knifes & spitters. And I’ve also been on the net looking for a riving knife or splitter that will work/fit my Uni, and can’t seem to find a concrete answer about what type/brand to get, so I could use some help here before I go totally nutz!! LOL. Some of what I’ve read says there’s no riving knife that can be fitted to an older Unisaw (mine is 1994 I believe?). But as seen in the pics below, there is what appears to be a fitting with a spring loaded pin that will accept a riving knife, or splitter, that will tilt with the blade, however will not move with the blade when it is raised or lowered. It looks like maybe the fitting was originally for a blade guard? Anyways, anyone know where I would find a riving knife or splitter that will work in the fitting?

As always, help/advice is greatly appreciated.

BTW….pay no attention to the blade that’s on the saw. The blade was on the saw when I bought it and is beat up pretty good and will be replaced before I put the saw into service.

-- Bill, central NY...no where near the "big apple"


15 replies so far

View knotscott's profile

knotscott

5601 posts in 2121 days


#1 posted 07-21-2013 04:28 PM

A splitter can be either fixed to the insert or mounted behind the blade/ The mounted splitters can tilt with the blade, but in both cases, it’ll stay at a fixed height, and won’t rise and fall with the blade. A riving knife is usually mounted in closer proximity to the blade, and it rises, falls, and tilts in conjuction with the blade.

There should be several traditional splitters that will work with your saw….Beisemeyer, Merlin, Shark Guard, Excaliber, Microjig, etc. The only aftermarket riving knife I know that will retrofit to an older pre-riving knife saw is the BORK, made by fellow woodworker Bob Ross.

BTW, was that beat up blade (that I paid no attention to) an Infinity Combomax? If so, it’d be worth having it sharpened, and possibly fixed if it’s damaged.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View OhioMike's profile

OhioMike

55 posts in 908 days


#2 posted 07-21-2013 04:41 PM

Looks exactly like the Biesemeyer splitter on my 1995 Unisaw

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bbc557ci

548 posts in 820 days


#3 posted 07-21-2013 04:49 PM

BTW, was that beat up blade (that I paid no attention to) an Infinity Combomax? If so, it’d be worth having it sharpened, and possibly fixed if it’s damaged.

Just went and checked the blade and there are no identifying marks/labels on it but a few teeth are missing. I have know idea what the brand is.

I’m thinking the fitting I referred to was/is likely for the blade guard. The “slot” appears to be a bit off set from the plane of the blade. Thanks KS for the reply.

-- Bill, central NY...no where near the "big apple"

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bbc557ci

548 posts in 820 days


#4 posted 07-21-2013 04:53 PM

Looks exactly like the Biesemeyer splitter on my 1995 Unisaw

Sure does!! Did the spring loaded fitting come with the splitter, looks pretty new.

-- Bill, central NY...no where near the "big apple"

View OhioMike's profile

OhioMike

55 posts in 908 days


#5 posted 07-21-2013 06:06 PM

Yes, the quick-release and the splitter are sold as a package. I’m not sure if biesemeyer sells replacement splitters individually.

If you surf on over to leestyron.com (the SHARK GUARD web site), you’ll find they offer splitters that snap into the Biesemeyer quick-release mount. And they offer them in full kerf or thin kerf. (The factory original is full-kerf only)

Mike

View toolie's profile

toolie

1773 posts in 1374 days


#6 posted 07-21-2013 06:17 PM

with this, i bet you could rebuild what you have adding a splitter similar to the bies for ~ $80:

http://www.sawcenter.com/splitterparts.htm

or am i missing something?

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

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bbc557ci

548 posts in 820 days


#7 posted 07-21-2013 07:05 PM

OhioMike – I checked out leestyron.com and with their splitter it shows the spring loaded mechanism now attached to the saw, is removed and not used correct? Regardless, I don’t see the 34-459 listed, tons of others but not mine. Maybe I’ll give them a call Monday and discuss.

Toolie – Thanks for the link. I’ll check Sawcenter out. I don’t think you’re missing anything (you rarely do!!).
Seems someone would make a splitter that would slide right down into the existing slot. Maybe I’m missing something!!

-- Bill, central NY...no where near the "big apple"

View OhioMike's profile

OhioMike

55 posts in 908 days


#8 posted 07-22-2013 12:15 AM

I find their web site confusing. This link should take you directly to the page with the splitters that fit into the spring-loaded mounting system you already have – at least that’s how I read it. Calling them before ordering is a really good idea.

http://leestyron.com/zspdelta.php

Roll down the page and look for this:

Mike

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bbc557ci

548 posts in 820 days


#9 posted 07-22-2013 01:47 AM

Mike – Yes their site did leave me with a few questions as well. The Bies spring loaded fitting in your post looks the same that’s on my uni, but mine appears to have been there a long long time. Not all that familiar with the unisaw but it looks OEM to me. I’ll try calling them tomorrow. Might be their Bies style knife might just fit into the existing spring loaded slot on my saw….or would that be TOO simple?!? ;o)

-- Bill, central NY...no where near the "big apple"

View OhioMike's profile

OhioMike

55 posts in 908 days


#10 posted 07-22-2013 02:18 AM

I bought my Unisaw in 1995 and added the Biesemeyer splitter in 2005. My saw lives in my climate-controlled basement shop and that probably accounts for the clean appearance of the Biesemeyer mount.

It’s unlikely that the Bies splitter was original equipment on your saw as Delta did not own the Biesemeyer corporation until sometime around the year 2000.

If you are able to locate a genuine Biesemeyer splitter to fit that mount, it will likely not work for thin-kerf blades. I don’t know if that’s an issue for you or not.

Mike

View blackcherry's profile

blackcherry

3201 posts in 2569 days


#11 posted 07-22-2013 03:36 PM

I retro fit my uni saw with the sharkguard ….http://leestyron.com/zspdelta.php ... it took sometime to recieve but well worth was very please with the purchase.

View GNP's profile

GNP

12 posts in 1248 days


#12 posted 07-22-2013 03:58 PM

I have the BORK on my Unisaw, and am very happy with it. It moves up and down with the blade.

View runswithscissors's profile

runswithscissors

1230 posts in 771 days


#13 posted 08-04-2013 07:18 AM

Check out my blog on this dated Feb 23, 2013. It shows and tells how I designed a true riving knife for my Uni. I have since improved (i.e. simplified) the method of attaching the base plate, and am very pleased with the result. Naturally, I still try to think of ways to make it even better, and would be open to suggestions.

Lee Styron of Leeway Workshops picked it up, and we are trying to develop it together. But he is in the throes of enlarging his operation, and hasn’t had time to work on it. So I would hope some of you guys would contact him and ask him to hurry up with the riving knife.

Meanwhile, I’m contemplating making up a limited run of them myself. Unlike Lee’s, mine would not be powder coated, but just plain mild steel. And he has in mind a different method of attaching the actual knife to the articulating arm. Also, I think he may be wanting to incorporate his Shark Guard into it. I did have a small run of the basic parts made up for me by a local steel vendor with their computerized plasma cutter. I may do a few more in exploring whether I want to go into small scale manufacturing.

It seems ironic to develop something for what has to be a shrinking market, as all new machines must have riving knives, and the older ones inevitably get decommissioned as they wear out, but Lee says there are still thousands of old Unis out there. I don’t know whether this will work on other saws, such as Grizzly 1023 or PM 66. I would have to get a close look at their arbor design before I could answer that.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View Don Broussard's profile

Don Broussard

2136 posts in 997 days


#14 posted 08-07-2013 01:11 PM

runswithscissors’ blog is here. Elegant solution.

-- People say I hammer like lightning. It's not that I'm fast -- it's that I never hit the same place twice!

View BorkBob's profile

BorkBob

71 posts in 1438 days


#15 posted 08-08-2013 02:24 AM

“I don’t know whether this will work on other saws, such as Grizzly 1023 or PM 66. I would have to get a close look at their arbor design before I could answer that.”

The Unisaw, Grizzly 1023 and Jet JTAS use simiilar arbor brackets and have similar clearances behind the saw blade. The PM66 is set futher back and leaves very little room behind the blade.

-- Please Pray for Our Troops / Semper Fi / Bob Ross / www.theborkstore.com

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