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HELP!! Table saw blade stuck on arbor!

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Forum topic by TheRyeCellar posted 01-22-2020 11:41 PM 451 views 0 times favorited 9 replies Add to Favorites Watch
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TheRyeCellar

2 posts in 34 days


01-22-2020 11:41 PM

Topic tags/keywords: table saw dewalt arbor stuck blade question

I need some help. I was removing my dado stack from my Dewalt job site saw, but the left-most blade will not come off. It spins freely on the arbor, but will not move away from the motor-side flange at all. What can I do to remove it or who can I call for more help?


9 replies so far

View Madmark2's profile

Madmark2

848 posts in 1228 days


#1 posted 01-23-2020 01:07 AM

The arbor screw is acme (square thread). The blade is down in the thread valley. Rotate the motor by hand and/or jiggle the blade up and down to clear the burr.

M

-- The hump with the stump and the pump!

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Andybb

2506 posts in 1243 days


#2 posted 01-23-2020 01:33 AM

Look closely. Is there a shim wedged in the threads against the blade??

-- Andy - Seattle USA

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TheRyeCellar

2 posts in 34 days


#3 posted 01-23-2020 04:47 AM

I have jiggled the blade and rotated the arbor and blade a million times, all to no avail. It’s not moving across whatever burr there may be.

How bad of an idea is it to rig up a clamping jig to try and use clamps to press it off the arbor?

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Madmark2

848 posts in 1228 days


#4 posted 01-23-2020 05:35 AM

You’ll destroy the blade. It went on, it has to be hung on something on the arbor. Is there a sliver of metal somewhere? Does it rotate backwards? Rotate the arbor shaft 180 and try again. Have you tried putting the arbor nut back on and tightening to see if snag can be cleared?

All else fails hit it with a hammer. It won’t fix anything, but it will make you feel better.

-- The hump with the stump and the pump!

View therealSteveN's profile

therealSteveN

4906 posts in 1214 days


#5 posted 01-23-2020 06:36 AM

Is this a DW745-XE?

If so, do some Google searching. Initial owner manual said was OK to use a Dado blade set, NEW info says you cannot.

DW745-XE. can you use a dado blade

https://www.google.com/search?client=firefox-b-1-d&q=DW745-XE.+can+you+use+a+dado+blade

New manual, refer to page 15

https://www.2helpu.com/PDMSDocuments/EU/Docs/docpdf/DW745-TYP4_XE.pdf

-- Think safe, be safe

View Woodknack's profile

Woodknack

13067 posts in 3020 days


#6 posted 01-23-2020 06:42 AM

I didn’t know you could fit a dado set on a Dewalt jobsite. If the blade spins but won’t come off, it almost has to be something on the outside of the arbor wedging it. If it were stuck to the flange it wouldn’t spin freely. Get a flashlight and reading glasses. If all else fails, hit it with a mallet.

-- Rick M, http://thewoodknack.blogspot.com/

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MrRon

5831 posts in 3883 days


#7 posted 01-25-2020 05:57 PM

Page 15 of the manual is confusing. It states the arbor diameter is 16 mm (.625”). Which one is it? If it is 16 mm, that equates to .6299”, which is .004” smaller than saw blades with a .625” dia hole.

View Lazyman's profile

Lazyman

4675 posts in 2027 days


#8 posted 01-25-2020 06:06 PM

Try a blow dryer on the blade to see if a little expansion will be enough to free it

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View AndyJ1s's profile

AndyJ1s

160 posts in 395 days


#9 posted 01-26-2020 01:52 AM

Does the blade slide or tilt away from the flange at all?

If so, see if you can get a flat blade screwdriver, or similar tool, in between the flange and the blade, and slowly work around the blade (turning it and the arbor) as you ease the blade off the arbor a little at a time.

If your blade is already tilted (not parallel to the arbor flange, then try to move it back parallel to the flange before trying to slide it off again. It is important to try to keep the blade parallel to the arbor flange as you slide it off, since any tilting of the blade relative to the flange will tend to wedge it in place.

My dado blades are a pain to get on/off my early ’’90s Unisaw arbor, but they will wiggle off after a fashion.

Dado blades have to fit tight, otherwise you can’t get a uniform depth across the dado width.

I second the above-mentioned caution to check to see if a shim (if you were using shims) slipped into the threads, keeping the blade from coming off.

Finally, slowly rotate the arbor, looking for burrs on the shaft (most likely on the threads) that could be catching on the blade. If so, VERY lightly sand or file the burr down to allow the blade to come off. Be careful though, if you file too much, it could make getting accurate dado depths very difficult in the future.

Andy – Arlington TX

-- Andy - Arlington TX

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