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Miter Saw Kickback - now blades wobble some

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Forum topic by Keith Kelly posted 12-01-2015 06:51 PM 792 views 0 times favorited 11 replies Add to Favorites Watch
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Keith Kelly

223 posts in 1130 days


12-01-2015 06:51 PM

Last weekend, I had a kickback sort of thing with my miter saw. I believe what happened was that I was holding a piece that had recently been glued along a weak area, but not fully set. My theory is that the joint failed with my pressure against the fence, and then there was a loose object that the blade caught. It made quite a loud bang/whack/wham (batman style) and sent wood flying and broken.

But the point of this thread is: my miter saw has a wobble now. I figured it was the blade (100t Diablo), so I swapped to a different blade, and the wobble still exists. It’s minor, but definitely visible by eye.

So I’m trying to figure out where to go from here. Just use it and take slow cuts? Replace some part of the arbor, etc.

What would you check next?

-- Keith - Bolivar, Missouri, http://www.SquareOneWoodworks.com


11 replies so far

View distrbd's profile

distrbd

2228 posts in 1913 days


#1 posted 12-01-2015 06:57 PM

I definitely will not use it with a wobble,your best bet is to buy a good used saw unless the miter saw is a good one like Dewalt or Bosch ,Milwaukee ,then see if you can replace the the bearing or the complete motor but I doubt it would be cost effective.

-- Ken from Ontario, Canada

View Keith Kelly's profile

Keith Kelly

223 posts in 1130 days


#2 posted 12-01-2015 07:00 PM

Yikes.

It’s a Ridgid 12” and I’d consider it a decent saw. Come on, how about news I’d rather hear? :)

Is it typical for kickback to cause something to bend/break other than the blade?

-- Keith - Bolivar, Missouri, http://www.SquareOneWoodworks.com

View mahdee's profile

mahdee

3554 posts in 1234 days


#3 posted 12-01-2015 07:05 PM

I think Ken is right. Take the blade out and turn it on. If the shaft is wobbling, then either it is bent or the bearing has come lose or something. You would have to take the motor out and possibly replace the armature or bearing and in the worst case scenario, both.

-- earthartandfoods.com

View MrUnix's profile (online now)

MrUnix

4242 posts in 1666 days


#4 posted 12-01-2015 07:10 PM

Unfortunately, it sounds like you may have bent the arbor – which is actually the end of the motor armature. I’d throw a dial indicator on it and see if you can pinpoint where the wobble is coming from first though..

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View TheFridge's profile

TheFridge

5765 posts in 953 days


#5 posted 12-01-2015 07:16 PM



Unfortunately, it sounds like you may have bent the arbor – which is actually the end of the motor armature. I d throw a dial indicator on it and see if you can pinpoint where the wobble is coming from first though..

Cheers,
Brad

- MrUnix

Ditto

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View waho6o9's profile

waho6o9

7179 posts in 2043 days


#6 posted 12-01-2015 07:23 PM

On your next saw maybe make a zero clearance insert.

:)

View pottz's profile

pottz

910 posts in 451 days


#7 posted 12-01-2015 07:24 PM

i agree with the others if you bent the shaft go see santa at the mall sorry but it probably would not be worth the cost to repair.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

View splintergroup's profile

splintergroup

829 posts in 689 days


#8 posted 12-01-2015 08:10 PM

Some saws have the motor offset from the arbor to increase cut capacity. If this is the case, the arbor might be separate from the motor shaft and be a lot cheaper as a replacement part.

View splintergroup's profile

splintergroup

829 posts in 689 days


#9 posted 12-01-2015 08:14 PM

I had a look-see at a generic Rigid 12” CMS and the arbor is separate ($10). See if you model is that way.

(Of course determine that it is a bent arbor first 8^)

View crank49's profile

crank49

3981 posts in 2438 days


#10 posted 12-01-2015 08:34 PM

Either the arbor shaft is bent or the bearing housing is busted. A bent shaft can probably be replaced. Busted housing = shopping trip.

-- Michael: Hillary has a long list of accomplishments, though most DAs would refer to them as felonies.

View Holbs's profile

Holbs

1379 posts in 1496 days


#11 posted 12-02-2015 01:05 AM

zero clearance insert for a miter saw. who knew! I like it…

-- Yes, my profile picture is of a Carpenter Bee! The name is derived from the Ancient Greek "wood-cutter"

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