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I'm and idiot and need some help! or I did something stupid to my TS and need help!

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Forum topic by Mark Shymanski posted 08-24-2011 05:44 AM 1872 views 0 times favorited 70 replies Add to Favorites Watch
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Mark Shymanski

5119 posts in 2456 days


08-24-2011 05:44 AM

Topic tags/keywords: tablesaw blades help fixing a problem stuck blade tablesaw blade

You know there are evenings when you should just put the tools down go into the house grab a favourite cool beverage and turn on the idiot box and melt your brain even further…today was one of those evenings. I’ve not been out in the shop much so when I had some time this evening I wanted to make the best of it and ‘GET A LOT DONE”... So I am making myself a small box; I haven’t done a complete project in a while and thought a small box would be the way to boost my success rate. So I trim my edge boards to length, mitre the corners (a real simple box) and am enjoying the way my new TS is cutting so smoothly and accurately. I want to rabbet the bottom edge to put in the bottom so decide to switch to my Freud 8” dado set (bought at HD about two years ago, worked fine with my old Craftsman tablesaw) and it is a bit snug getting the first outside cutter on. I thought to myself “hoy, I’ll just thread it on with the nut and carry on” as I was doing ita small voice at the back of my head was saying “Hey stupid how are you going to get it off if you have to thread it on with the nut” . I should have listened but I wanted “TO GET SOMETHING DONE”! Well the long and the short of it isi that now I have one outside cutter blade firmly stuck on my 5/8 arbor with a saw that when I measure it is about 1/32 or less (when I calm down I will measure it more accurately) of a 5/8” the TS arbor is bang on 5/8”. First I need help kicking myself in the back of the head for not listening to the wee voice of reason and second I need help in figuring out a way to get the blade off. Man am I annoyed with myself!

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2


70 replies so far

View dakremer's profile

dakremer

2492 posts in 1835 days


#1 posted 08-24-2011 05:53 AM

well I guess this would probably ruin the blade – but could you heat around the hole of the blade a little, making it expand so you can slide it off?

or maybe some good ole soap and water and your Lat muscles! :)

good luck! I’m sure you’ll hear some better ideas than mine!

-- Hey you dang woodchucks, quit chucking my wood!!!!

View Mark Shymanski's profile

Mark Shymanski

5119 posts in 2456 days


#2 posted 08-24-2011 06:00 AM

The heating the blade sounds like a good idea, that was going to be one of my attempts tomorrow night. I have some graphite spray that may work as well as the soap and water….I’ll give that a shot as well, good ideas, thank you.

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2

View Taigert's profile

Taigert

593 posts in 2584 days


#3 posted 08-24-2011 06:13 AM

I feel for you my friend.
The only thing I can think of would be heat. If you are going to use a throw away torch bottle. My suggestion would be use MAPP (yellow can) gas as it burns hooter than (blue can ) propane. The faster you can heat the blade the better chance you stand of not heating the arbor as well.
In the HVAC industry we you some stuff that resembles toothpaste for a lack of a long explanation. If you squeeze the tube and put a thick coat only around the arbor if will stop the heat from transfering. I’m not sure were you are located but if you look up any trane, Bryant, or Carrier dealer up and find a HVAC supply house that is where you would buy the stuff. Just make sure you clean up any sawdust first and have a fire extinquisher( sp?) You know what I mean. It’s too late in the day to look it up, oh well??

let us know what happens

I have the new model Delta TS, and they gave me a new 8” Dado blade with the saw. the first time I used it, it was a tight fit. I used some emory cloth in the blade holes prior to getting them to fit, where I could still remove the blades from the arbor.

-- Taigert - Milan, IN

View fussy's profile

fussy

980 posts in 1794 days


#4 posted 08-24-2011 06:29 AM

The paste Taigert mentions is also available at good welding supply dealers, maybe eves TSC. We allways calld it heat sink paste. Before that, use a couple jam nust and a wrench to lock the arbor, and use graphite and gloves to try to twist it off. Let us know.

steve

-- Steve in KY. 44 years so far with my lovely bride. Think I'll keep her.

View Lee Barker's profile

Lee Barker

2169 posts in 1594 days


#5 posted 08-24-2011 06:59 AM

I question the heat idea. Think about it: If you heat up (and expand) the blade you are actually making the hole smaller. Any heat transferred to the arbor will make it larger.

Cooling it would seem to be the solution. You may have to remove the top of the saw and remove the arbor/blade/bearing assembly. At least now you can work on it safely.

I’d try a few hours in the freezer—the arbor, not myself—and see if that does it.

The arbor shaft itself is pretty soft stuff, so try to refrain from pounding on the threaded end unless you spin the nut on first and then use a maple block between it and the hammer. The block you can simply cut on your tablesa….oops, sorry.

Kindly,

Lee

-- "...in his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"

View 1yeldud1's profile

1yeldud1

298 posts in 1786 days


#6 posted 08-24-2011 11:14 AM

The “body” of the saw blade should be made of soft steel. What i would do is to drill 2 holes about say 5/16 or 3/8 diameter in the actual saw blade on each side of the blades arbor – be shure not to hit the actual saw arbor when drilling. I would then get a piece of steel say 1/2 inch thick or perhaps a piece of small channel iron ahd drill the same bolt pattern as you did in the blade. I would then place the piece of steel against the saws arbor and use 2 bolts and hex nuts as a “puller” to “jack” the blade back off off the saws arbor – you might want to thread the saws arbor nut onto the arbor just until it is “flush” wi the the end of the arbor to insure you dont damage the 1st thread of the arbor during the initial pulling of the blade.

View Howie's profile

Howie

2656 posts in 1667 days


#7 posted 08-24-2011 02:27 PM

I just bought a new set of Osluns about a week ago. They too fit extremely tight. I threaded them on and threaded them off. After doing this a couple of times they seem to loosen up some. I would rather they fit snug than loose, too much chance of wobble I would think.
I’m with Lee, don’t think I want heat on the shaft of my saw. I too have experience with heating metals and there is too much chance for distortion if you apply too much in the wrong place.

-- Life is good.

View Sawkerf's profile

Sawkerf

1730 posts in 1812 days


#8 posted 08-24-2011 03:47 PM

Instead of heating the blade, try using some dry ice on the arbor. If you can shrink it by a thousandth or so, your blade should come off fairly easily.

When you get it off, a machinest should be able to enlarge the arbor hole slightly to allow correct assembly. You shouldn’t need to force it together.

-- Adversity doesn't build character...................it reveals it.

View CharlieM1958's profile

CharlieM1958

15777 posts in 2962 days


#9 posted 08-24-2011 03:57 PM

I agree that cooling might work. I don’t know if this is still the case, but I used to have a can of compressed air, and that stuff would come out icy cold if you turned the can upside down before you sprayed.

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

View jim C's profile

jim C

1455 posts in 1842 days


#10 posted 08-24-2011 04:18 PM

Trust me
Heat the blade. It’s thin so it should expand much faster than the arbor and will come off with a little coaxing.
You only have to heat it to about 100 to 150 degrees. I would work with a heat gun.
My guess is its “press fit” differential (about .001)

-- When I was a boy, I was told "anyone can be President", now I'm beginning to believe it!

View MedicKen's profile

MedicKen

1602 posts in 2206 days


#11 posted 08-24-2011 04:48 PM

I agree heat would be best. I do have a few concerns however. What type of saw is this? Is it belt drive or direct drive? Be very careful with the heat and don’t overheat it. Remember you will also be heating the arbor and the arbor has bearings around it. The bearings will have grease in them and grease is flammable. I would think that the grease would have get really hot before combustion would occur but the plastic/rubber seals on the side of the bearing will melt as well.
Another option would be to use a bar type puller. But it would involve drilling 2 holes in the blade. In the holes you can thread 2 bolts with washers and nuts on the back side, the other end of the bolt goes through the puller.

-- My job is to give my kids things to discuss with their therapist....medic20447@gmail.com

View jim C's profile

jim C

1455 posts in 1842 days


#12 posted 08-24-2011 04:55 PM

No flames.
Use a heat gun.

-- When I was a boy, I was told "anyone can be President", now I'm beginning to believe it!

View Manitario's profile

Manitario

2378 posts in 1627 days


#13 posted 08-24-2011 05:27 PM

My gut response was to heat the blade, because hey, metal expands right? Then Lee’s post gave me pause. Metal expands when heated, in all directions. Unfortunately this will make the hole for the arbor smaller. Here’s a really crappy drawing illustrating that:

Then again, if it was my TS, I’d probably try heating it anyways, because that’s just the way my brain works. Don’t keep us in suspense, let us know what you tried!

-- Sometimes the creative process requires foul language. -- Charles Neil

View CharlieM1958's profile

CharlieM1958

15777 posts in 2962 days


#14 posted 08-24-2011 05:33 PM

This heat/cold question is interesting. We need a real science guy to settle this. :-)

My gut reaction was the same as Lee’s. Heat expands and cold contracts. If the metal parts contract, in theory the hole becomes bigger and the arbor smaller, and the cutter slips right off.

Now you guys voting for heat may be right, but that seems to go against the basic laws of physics as I understand them.

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

View CharlieM1958's profile

CharlieM1958

15777 posts in 2962 days


#15 posted 08-24-2011 05:42 PM

A little research, and I may have answered my own question.

Heating is often used to free a frozen nut from a bolt. But it is not because the heat itself separates the parts. Rather, it is the heating and subsequent cooling off (expansion followed by contraction) that breaks the corrosion causing the pieces to stick together.

In this case, corrosion is not the issue… we’re simply talking friction. It would seem, then, that heating is not really appropriate in this particular situation.

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

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