This is a reply to all of you that responded to my original
and subsequent post. I appreciate all comments, especially those
discussing safety.

Now just a little background.
I have been using this saw for many years (since 2001 I think) and after
I moved to Vermont I started setting up my new shop. I had been using
the table saw to build some benches for the wife' art studio.
This included using a standard thin kerf and dado blades with
no problems. There is no way to keep the from arbor rotating when
tightening the arbor nut. (To tighten the arbor nut I must lock the
blade with a piece of wood (per saw user guide) to keep it from rotating.)

I then started work on a workbench for the shop, used the standard
blade, then changed to the dado blade (all OK so far) then changed
back to the standard blade and the arbor nut would not tighten up!
First thought I was having a senior moment and forgot how to mount the
blade!!!! :-).

It kept slipping such that the entire arbor would rotate as I turned
the nut. Now, to attach the blade, you put the blade on to the arbor,
then add the blade collar, then the nut. The blade collar is "dome"
shaped with the "inside" of the dome facing the blade.
When the nut is tightened the blade collar compresses against the blade
and holds the blade fast against the arbor.

After I cleaned the nut, collar and blade, the nut tightened up just
fine. I have using the saw regularly since my post on 9 March with no
problems.

I certainly scratched my head over this, as did my brother who is also
a woodworker. Read, reread and rereread the user guide and then posted
my original message.

I looked at the parts but did not see anything obvious that would cause
the blade to slip. I thought the blade collar had maybe "lost" its
compression strength and was going to buy a new one from Ridgid. Then
I decided to just use a bit of sand paper to clean the surfaces (nothing
to lose if it did not work).... and lo and behold the blade tightened
up just fine. Carefully stood back and started the saw with no
flying objects seen :-). Shut down the saw and checked blade tightness
and all was good. Made some cuts and everything AOK!.
I have been using the saw for a few weeks (changed blades several times)
and still OK.
Again, thanks to all who posted comments.

Marty



Marty wrote:
I have a Ridgid TS2424 table saw, that, up until today I have
been very happy with.
But today the following happened which I can only explain one
way.
I normally use a thin kerf 10 blade with this saw. Today after
I made some cuts using this blade I replaced it the
my dado blade set to cut lap joints. Both of these blades
were appropriately tightened with no problems.

Now this puzzling problem.

After I used the dado blade,I reinstalled the normal blade and could not
tighten the blade to the arbor. No matter how many turns on the wrench
it would not tighten. While trying to tighten the blade the arbor
would also rotate. Which make some sense since there is no way to
keep the arbor from rotating (and never has been).

The only thing I can see that could be the problem is blade collar
can't compress to hold the blade to the to the arbor.
Does this part normally "wear out"? The second part of this
question is can any table saw blade collar be used on any saw (assuming
it is sized for the arbor shaft)?

Thanks
Marty