Dado question

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Forum topic by Nhapplewood posted 08-03-2016 09:15 PM 489 views 0 times favorited 10 replies Add to Favorites Watch
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9 posts in 499 days

08-03-2016 09:15 PM

Hi everybody. Just signed up for this message board because I can’t find an answer to a question I have. Just bought my first dado set for my table saw. 6” oshlun. It is not a wobble set, but seems to have about an 1/8” wobble. Is this normal on non-wobble sets?

I put a brand new 10” single blade on it to double check that the arbor is fine. It is. I made sure that I offset the blades so that none of the teeth were touching. I loosened and retightened the blades to see if that was the problem. Dado blades don’t look warped. I’m stumped

10 replies so far

View pintodeluxe's profile


5466 posts in 2650 days

#1 posted 08-03-2016 09:30 PM

No! That is not normal. Unplug the saw, and rotate the blades by hand to see if there actually is a wobble. You are correct that the teeth need to be carefully aligned so they don’t overlap. If it wobbles, and your arbor doesn’t do that with another blade, then the blade is defective.

Make sure one of the blades isn’t hung up on the arbor bolt. Shine a flashlight down there to confirm the blades all seat correctly against the arbor flange.

Good luck!

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View GR8HUNTER's profile


2963 posts in 550 days

#2 posted 08-03-2016 09:35 PM

make sure your putting the blades on the right way there is a certain way to put them on ….....what is width of dado you are trying to cut ?........ But no it is no normal


View KelleyCrafts's profile


2680 posts in 576 days

#3 posted 08-03-2016 09:37 PM

If you don’t see anything from pinto’s great advice them put one piece of the Oshlun kit on at a time, tighten then try again. I have that kit (the 8” version) and it’s a good little kit for the price. I don’t cut a million dados so it works fine for me. How big of stack are you putting on?

Keep us up to date on this. I’m sure someone will have the answer.

-- - pen blanks - knife scales - turning tools

View Kazooman's profile


867 posts in 1790 days

#4 posted 08-03-2016 09:38 PM

WOW! In the eight minutes it took my “two-finger-pecking-style” typing to enter my response three posts beat me to it. I think there is total agreement between the responses. Here is mine:

NO! There shouldn’t be any wobble with your dado stack. Either one of the blades is actually bent or something is preventing the stack from aligning properly on the arbor. I am not familiar with this particular dado set. Check to see that there is nothing about it that is causing a “hang-up” with your arbor and nut. Are all of the holes in the blades and chippers free from any burrs?

You have checked each blade and they all seem to be OK. So….. I would try this. Mount just the left hand blade. If that runs true, mount both outside blades. Does that run true” Try the two outside blades with each of the chippers to ensure that all of them run true.

Finally, are you certain that the set is wobbling or does it just look like it is? Sounds like a silly question, but a full dado stack does look strange when it is in motion. Mount the stack and with the table saw cord pulled, turn the stack by hand using something to reference the sides to confirm the wobble.

View KelleyCrafts's profile


2680 posts in 576 days

#5 posted 08-03-2016 09:39 PM

gr8hunter has a point. On the Oshlun kit the two main blades have arrows on them and they are odd, opposite of eachother according to the printed side. So if memory serves me here, the print side goes on the outside of the stack on either side. Verify this with the arrows on the print but I’m pretty sure that’s how mine are..

-- - pen blanks - knife scales - turning tools

View Nhapplewood's profile


9 posts in 499 days

#6 posted 08-03-2016 09:41 PM

I want to use it to make lap joints that are wider than the set. Multiple passes. I set it up with only the 1/8” chippers and the end cutting blades. Meant to mention that in the original post.

View Nhapplewood's profile


9 posts in 499 days

#7 posted 08-03-2016 09:47 PM

Great advice so quick. Thank you. I’ll definitely try the one blade at a time recommendations next.

View knotscott's profile


7787 posts in 3213 days

#8 posted 08-03-2016 09:47 PM

The bodies of the blades should be flush to each other, and the teeth from each blade need to be staggered so they’re not touching the teeth from another blade on the set.

What kind of saw do you have?

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

View Nhapplewood's profile


9 posts in 499 days

#9 posted 08-03-2016 09:55 PM

Delta 36-600.

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9 posts in 499 days

#10 posted 08-03-2016 10:24 PM

Problem solved. Put them back on and the wobble is gone. I think there might have been something – a burr I overlooked maybe – between the blades somewhere. Thanks for he replies.

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