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Riving knife binding

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Forum topic by Karda posted 08-04-2020 01:53 AM 595 views 0 times favorited 9 replies Add to Favorites Watch
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Karda

3367 posts in 1772 days


08-04-2020 01:53 AM

I have been having trouble with my table saw sled no moving freely I added new wax to sleed and table and it still bound. At some point it was very smooth, then I found the bind, the riving knife is binding on the saw slot in the rear fence. I trie filing it out but the only file that fits is way to fine. any suggestions thanks mike


9 replies so far

View JohnDon's profile

JohnDon

181 posts in 2388 days


#1 posted 08-04-2020 02:35 AM

On my table saw, the riving knife mounting bracket is attached to the main trunnion by two bolts in oversized holes. This allows sideways, vertical and tilt adjustments of the riving knife relative to the blade. I can’t tell the make of your saw, but the bracket probably needs some tweaking to make the riving knife and blade coplanar. A quick check of coplanarity is to slide a straight edge along the blade (on both sides), and see whether it strikes the riving knife.

View MrUnix's profile

MrUnix

8753 posts in 3417 days


#2 posted 08-04-2020 04:29 AM

You don’t need a riving knife/splitter when using a sled. Just remove it.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View Robert's profile

Robert

4716 posts in 2699 days


#3 posted 08-04-2020 01:38 PM

Don’t remove it, fix it as JohnDon described.

-- Everything is a prototype thats why its one of a kind!!

View GR8HUNTER's profile

GR8HUNTER

8889 posts in 1931 days


#4 posted 08-04-2020 02:18 PM

also make sure of kerf width :<))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN :<))

View Karda's profile

Karda

3367 posts in 1772 days


#5 posted 08-05-2020 04:40 AM

the saw is a cheap craftsman job site saw. I tried moving the knife it helped a little. removing the knife is and idea but it is a witch to install, they use a one sided wing bolt. I am going to check and see if I can replace it with a hex bolt. The riving knife will loosen and touch the blade. The riving knife is a tad thicker than the blade. any sugestinons on widening the slot in the sled fence thanks Mike

View CWWoodworking's profile

CWWoodworking

2122 posts in 1397 days


#6 posted 08-05-2020 11:57 AM

Take your runners off and use your fence to widen groove. I personally would want to keep it on with sled.

View whope's profile

whope

255 posts in 3664 days


#7 posted 08-05-2020 12:11 PM

One of the main functions of the riving knife is to keep material from coming in contact with the back of the blade, so best to keep it in place.

-- Measure it with a micrometer, mark it with chalk, cut it with a Hammer.

View Rich1955's profile

Rich1955

382 posts in 609 days


#8 posted 08-05-2020 12:45 PM



the saw is a cheap craftsman job site saw. I tried moving the knife it helped a little. removing the knife is and idea but it is a witch to install, they use a one sided wing bolt. I am going to check and see if I can replace it with a hex bolt. The riving knife will loosen and touch the blade. The riving knife is a tad thicker than the blade. any sugestinons on widening the slot in the sled fence thanks Mike

- Karda

If the riving knife is thicker then the blade, you have the wrong blade installed. the knife and blade should be the same thickness.

-- Rich

View runswithscissors's profile

runswithscissors

3133 posts in 3244 days


#9 posted 08-05-2020 11:20 PM

Or, it does no harm for the knife to be a little thinner than the blade.

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

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