Vibration on table saw while cutting wood.

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Forum topic by JCMeyersIV posted 05-15-2013 05:03 PM 2137 views 0 times favorited 21 replies Add to Favorites Watch
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75 posts in 2066 days

05-15-2013 05:03 PM

Topic tags/keywords: question tablesaw

Ok so, i admittedly have no idea how to title this, but its about whats happening. I have an R4512 table saw, i run a full kerf freud industrial combi blade on it. The blade cuts ultra smooth but when i feed material through for a rip it makes this ungodly vibration, it being the wood. A couple times the woods nearly jumped up off the table.

I have no clue what could be causing this. It does it in just about any wood, hard or soft, but not as badly with MDO or ply. The only thing i can think of is maybe the saw just doesnt like the full kerf and its too much of a hog. I need to buy an independent ripping blade, do you guys think i should get a thin kerf? or could this problem be something else?

Saw is 13a, not sure on the HP, and is set up to stop dead on at 0 degrees (wixey, and engineer scale checked) if that helps. Thanks guys!

-- John, NNY,

21 replies so far

View Marcus's profile


1163 posts in 2019 days

#1 posted 05-15-2013 05:06 PM

Is the wood twisted/warped at all? When I cut through twisted wood I see a similar thing. Of course it shouldnt happen as often w/ MDO/ply since its a bit more stable. The only other thing I could think would be that the fence is not parallel to the blade, possibly pushing the stock into the blade.

View DaddyZ's profile


2475 posts in 3040 days

#2 posted 05-15-2013 05:09 PM

Sounds like you might be pinching the wood between Fence & blade.

Check Fence Parallel to Blade, you want fence End Out just a hair

-- Pat - Worker of Wood, Collector of Tools, Father of one

View ChefHDAN's profile


1062 posts in 2849 days

#3 posted 05-15-2013 05:12 PM

check the blade & fence for parallel to the miter slot, it has to be the set of the tool not the kerf. What is set to stop dead at 0, your bevel?

-- I've decided 1 mistake is really 2 opportunities to learn.. learn how to fix it... and learn how to not repeat it

View MrRon's profile


4770 posts in 3243 days

#4 posted 05-15-2013 05:28 PM

Sounds to me like the blade hook angle is <5°. A more agressive hook angle may rip better, like 15° to 20° and fewer teeth. A combination blade usually has 50 teeth. One of 30 teeth or less will be better. All other replies also apply.

View Woodknack's profile


11626 posts in 2380 days

#5 posted 05-15-2013 06:37 PM

Is it a constant vibration or does it come and go? I had the latter problem with a particular full kerf rip blade and never fully solved it; I think it may have been a bad blade.

-- Rick M,

View PurpLev's profile


8535 posts in 3648 days

#6 posted 05-15-2013 06:43 PM

could be a bad blade (bad single tooth or similar), could also be blade to fence parallelism (or lack of).

are you getting same vibrations when cross cutting (as in with a miter gauge and without the use of the fence)?
if not, the fence setup is the culprit, if you do, then at least you can cross out that theory.

I would also try a different blade – full or thin (although for the smaller 1.5hp motor a thin kerf would actually benefit you long term even if it can handle full kerf blades) and see if that resolves the issue if this is not the fence setup.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View JCMeyersIV's profile


75 posts in 2066 days

#7 posted 05-16-2013 12:29 AM

The fence and blade are parallel. And it seems to come and go. Some pieces it won’t do it at all others it will. Also the wood isn’t warped as asked by someone in the first responses.

-- John, NNY,

View Woodknack's profile


11626 posts in 2380 days

#8 posted 05-16-2013 03:12 AM

Sounds similar to the problem I had, also a full kerf Freud blade, but rip instead of combo. Mine would vibrate about 3 or 4 times over a 48” cut, producing a rough cut each time. Sound familiar or is your issue different? I did my testing on MDF to eliminate any issues with wood tension. For me, type of wood didn’t matter but it only happened with wood on both sides of the blade. If I was just cleaning an edge, it ran fine. Knottscot and Freud both suspected the blade had lost it’s tension. Freud said it would be covered under warranty unless I had abused or sharpened the blade (neither) but I haven’t mailed it in yet.

-- Rick M,

View Grandpa's profile


3259 posts in 2675 days

#9 posted 05-16-2013 03:20 AM

Are you sure the blade is on correctly. Could you by chance put it on backward with the teeth pointing the wrong direction. I don’t mean to put you down but things happen. The teeth should point toward the operator.

View RonInOhio's profile


721 posts in 2864 days

#10 posted 05-16-2013 03:31 AM

When did you change out the blade ? Did it do it before you changed it ?

Double check that the arbor washer and nut are both on the outside of the blade. Can be relatively easy to forget the washer.

Change the blade. If it still does it with a different blade it could be the bearings.

Also check for the correct belt tension. And check to make sure drive pulley is on tight.

View Woodknack's profile


11626 posts in 2380 days

#11 posted 05-16-2013 03:31 AM

Ha! I think if you rip through a board with the blade on backwards you’re a pretty badass woodworker. I’d buy tickets to that show.

-- Rick M,

View Grandpa's profile


3259 posts in 2675 days

#12 posted 05-16-2013 03:37 AM

I will sell you one…LOL You could rub through a board. If it only happens when the blade is being used then why not. He didn’t say whether it was only with this blade or when it started.

View Woodknack's profile


11626 posts in 2380 days

#13 posted 05-16-2013 03:49 AM

Well he did say the wood almost jumped off the table, that’s about 1000x worse than the vibration I was getting.

-- Rick M,

View JCMeyersIV's profile


75 posts in 2066 days

#14 posted 05-17-2013 02:57 AM

Blades on correctly, washer and everything are there. I havent had to use my table saw for a few projects, ill try with a different blade tomorrow. I have a few of the cheaper Diablo combinations and i know theyre not full kerf.

-- John, NNY,

View Moron's profile


5032 posts in 3893 days

#15 posted 05-17-2013 03:46 AM

when ever I feel a vibration when I am on a saw

it was my testicles telling me I was alive

happy for that

-- "Good artists borrow, great artists steal”…..Picasso

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