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Forum topic by mpatrick posted 1268 days ago 1105 views 0 times favorited 20 replies Add to Favorites Watch
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mpatrick

54 posts in 1375 days


1268 days ago

I am having an issue getting blades on and off of the arbor on my saw. It only happens with my dado blades, my combo glides on and off effortlessly. I have tried it with 2 different dado stacks, and the same thing happens. It almost feels like its a bad thread, I am afraid its gonna roll the thread over. Is this normal for dado stacks? If not do you think chasing the threads would help? I really don’t want replace my arbor, if i don’t have to.

-- Michael...Houston, Texas


20 replies so far

View CharlieM1958's profile

CharlieM1958

15653 posts in 2816 days


#1 posted 1268 days ago

Are you saying that the blades don’t want to slide onto the arbor, or that the niut does not want to tighten after you put them on? If your arbor nut screws on and off easily, you know there is nothing wrong with the threads, so the only explanation is that the holes on your dado stacks are undersized. I never heard of that, but I don’t know what else makes sense.

-- Charlie M. "Woodworking - patience = firewood"

View teejk's profile

teejk

1206 posts in 1282 days


#2 posted 1268 days ago

sounds like the arbor is too short! I know my Delta contractor saw will JUST barely accept a 3/4” stack set and leave enough arbor to catch the nut. I have been using a Delta dado stack and they reinforce the center of the blades so I have no problem leaving the out-side washer off. On the Delta saw that is a cupped washer and by omitting it I gain at least a 1/4” of thread.

View mpatrick's profile

mpatrick

54 posts in 1375 days


#3 posted 1268 days ago

The nut tightens fine, so its got to be the blades. Its just hard to believe that 2 different sets would do it, but your right if the nut tightens theres nothing wrong with threads.

-- Michael...Houston, Texas

View mpatrick's profile

mpatrick

54 posts in 1375 days


#4 posted 1268 days ago

I have plenty of room on the arbor for the full width of the stacks, Its just that i cant get them on or off easily, I know I’m gonna cut myself one of these days. I’m pretty accident prone.

-- Michael...Houston, Texas

View ksSlim's profile

ksSlim

955 posts in 1487 days


#5 posted 1268 days ago

Use caliper or micrometer to compare arbor OD to blades ID on both dado and regular blades.

-- Sawdust and shavings are therapeutic

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mpatrick

54 posts in 1375 days


#6 posted 1268 days ago

ksSlim-good idea, i’ll try that when I get home.

-- Michael...Houston, Texas

View lew's profile

lew

9938 posts in 2353 days


#7 posted 1268 days ago

Are you using any of those thin brass spacer shims? I have a heck of a time getting them to slid over the threads.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View mpatrick's profile

mpatrick

54 posts in 1375 days


#8 posted 1268 days ago

lew-yes those brass shims are a bear, took 10 min to get one off once.

algale-That was my thinking as well, I just wanted to make sure that something wasn’t wrong with my saw.

-- Michael...Houston, Texas

View gbrown4's profile

gbrown4

106 posts in 1291 days


#9 posted 1268 days ago

I have the same problem with my Freud stack dado set. My dial-a-width dado set is not as bad. I make sure the arbor is clean and hit it with a little sandpaper to ensure no burs. Let me know if this helps.
Uncle Greg

-- Greg, Concordia, Mo

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mpatrick

54 posts in 1375 days


#10 posted 1268 days ago

gbrown4- The freud set is the one with the most trouble, Uncle mark gave it to me because he got the dial-a-width, now I understand why. (J/K)

-- Michael...Houston, Texas

View RetiredCoastie's profile

RetiredCoastie

999 posts in 1780 days


#11 posted 1268 days ago

I just purchased and used the Oshlun stacked set. The fit on mine is very tight, almost but not quite an interference fit. You definitely have to take them off carefully. I had a set that slid on fairly easily like my combo blade and the quality of cut wasn’t as clean and flat as the Oshlun and I think part of the reason is the close tolerance of the bore of the blade. It makes it even more difficult if your using the brass shims. I will be looking at the magnetic shims to see if they are easier to remove.

I believe in the case of the dial-a-width your only taking off one component with a deeper bore and it is less likely to take it off on a slight angle where a stacked set your taking off several shallow bored thin items that are more likely to come off not perfectly perpendicular to the arbors plane.

Just take your time and try to remove them as squarely as possible. I wouldn’t try reaming them as I think you’ll loose your cut quality.

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

View knotscott's profile

knotscott

5369 posts in 1973 days


#12 posted 1268 days ago

My dado set was very tight as well…tight enough that I did a light touch up of the bore with some fine sand paper. I’m not suggesting anyone do the same, because there’s an obvious downside if you’re too aggressive, but I am saying that a light sanding did the trick for me.

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

View skippyland's profile

skippyland

158 posts in 1289 days


#13 posted 1268 days ago

I use Freud’s dial a width dado set, and if Iget in too much of a hurry to dismantel after using the set up, it seems to bind a little…remedy? slow down and make sure to pull each component straight with no “lift”...works wonders. good luck.

-- Skip from Batavia, purveyor of fine and exotic sawdust & chips.

View CharlieM1958's profile

CharlieM1958

15653 posts in 2816 days


#14 posted 1268 days ago

Skippyland’s comment brings up another point…. Trying to put on or take off more than one blade or chipper at a time would greatly increase the chance of binding.

-- Charlie M. "Woodworking - patience = firewood"

View teejk's profile

teejk

1206 posts in 1282 days


#15 posted 1268 days ago

charlie…for the cost of a dado set one should only put on or remove one blade or chipper at a time! I treat mine as if it was a ticking time bomb (it even has its own wood box to make sure the cutting edges don’t touch) and it has served me well.

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