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Riving knives

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Blog entry by richgreer posted 1555 days ago 2046 reads 0 times favorited 16 comments Add to Favorites Watch

Does anyone know of a conversion kit that allows you to replace the splitter with a riving knife?

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.



16 comments so far

View David Craig's profile

David Craig

2130 posts in 1608 days


#1 posted 1555 days ago

I have not heard of a kit, but one thing you might want to try is adding a wooden riving knife to the end of a homemade throatplate. I have seen a couple people slot the ends of their zero clearance plates and attach a piece of thin hardwood to use as a makeshift riving knife. It looked to be pretty effective.

David

-- There is little that is simple when it comes to making a simple box.

View richgreer's profile

richgreer

4520 posts in 1574 days


#2 posted 1555 days ago

David – That’s an interesting idea. Thank you. It would probably be wise to make 2 or more with each one at a different height.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View Fireguy's profile

Fireguy

132 posts in 1735 days


#3 posted 1555 days ago

you could try a MIcro jig, MJ splitter. It is a splitter that attaches to your throught plate.

http://www.microjig.com/products/mj-splitter/index.shtml

-- Alex

View Damian Penney's profile

Damian Penney

1140 posts in 2491 days


#4 posted 1555 days ago

A riving knife rises and lowers and tilts with the blade, and anything that attaches to the throat plate won’t be able to do that.

-- I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso

View David Craig's profile

David Craig

2130 posts in 1608 days


#5 posted 1555 days ago

You are correct Damian, what I am proposing would be more of a splitter than a riving knife. Pretty much the homemade version of what Fireguy posted (thanks for the link Alex). Still, if you are in a situation where you have to make tight or tall cuts and can’t use the saw splitter, it can perform a similar task as the riving knife as it will still keep the wood from binding. I apologize for the poor use of terminology.

David

-- There is little that is simple when it comes to making a simple box.

View RetiredCoastie's profile

RetiredCoastie

999 posts in 1683 days


#6 posted 1555 days ago

I’ve spent a lot of time looking for just such a kit for my UNISAW and there is not one available short of buying the new UNI. The best you can hope for is a shop made splitter of differing heights. If someone could design and market a true riving knife for older saws they’d be rich.

-- www.thepatriotwoodworker.com Proud Supporter of Homes For Our Troops

View Woodguru's profile

Woodguru

12 posts in 1871 days


#7 posted 1555 days ago

Rich,

Check out the following link, I have used this riving knife for a few years now and works pretty good.

http://www.leestyron.com/sharksplitter.php

View ChunkyC's profile

ChunkyC

856 posts in 1754 days


#8 posted 1555 days ago

Woodguru: These look like splitters to me. Do they have a “conversion kit” to convert from a splitter to riving knife?

-- Chunk's Workshop pictures: http://spadfest.rcspads.com/thumbnails.php?album=135

View richgreer's profile

richgreer

4520 posts in 1574 days


#9 posted 1555 days ago

ChunkyC: What you see at the leestyron website is the option of buying a set of 3 splitters, each one of a different height. In terms of function, these would be a reasonably good alternative to a true riving knife but changing the splitter anytime you changed the cutting height by a meaningful amount would be a hassle.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View Dez's profile

Dez

1111 posts in 2577 days


#10 posted 1555 days ago

I use a 1/8th” dowel lined up with the blade in my zero clearance plates. None of my blades are thin cerf. If I need to lower it I just push it down farther into the plate. (the hole goes all the way through)

-- Folly ever comes cloaked in opportunity!

View THEGREATPUMPKIN's profile

THEGREATPUMPKIN

56 posts in 1608 days


#11 posted 1555 days ago

Maybe this will help,looks interesting. JIM

http://shop.walnutacrewoodworking.com/product.sc?productId=6&categoryId=2

-- A day without sawdust is like a day without sunshine

View bigike's profile

bigike

4028 posts in 1788 days


#12 posted 1555 days ago

the one post before mine is the best one i think. the price is kinda high though!

-- Ike, Big Daddies Woodshop, http://www.icombadaniels@yahoo.com

View richgreer's profile

richgreer

4520 posts in 1574 days


#13 posted 1555 days ago

I wish I could learn a little more about the product offered from walnut acre woodworking before buying it. I’m most curious about how one installs it and how one changes height.

I’m also curious about the micro jig product. It’s looks pretty good if all you are doing is vertical cuts.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View David Craig's profile

David Craig

2130 posts in 1608 days


#14 posted 1554 days ago

The walnut acre knife looks interesting but I do not like the waiver you have to sign before receiving it. I would never give someone legal amnesty before even being allowed to touch the product.

My 2 cents…

David

-- There is little that is simple when it comes to making a simple box.

View stefang's profile

stefang

11812 posts in 1834 days


#15 posted 1554 days ago

It seems that only a few saws can be retro fitted with a true riving knife. It’s worth the effort and cost to get one if yours’ can be retro fitted. I’ve got one and it’s very handy because when I’m only cutting a groove or any cut that doesn’t go all the way through I don’t have to remove the knife.

-- Mike, an American living in Norway.

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