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+-- Thread: Can table saw wobble be corrected? (/showthread.php?tid=7332138)
RE: Can table saw wobble be corrected? - Ed in NC - 08-01-2017
Do you have another blade? If so, install it, and check for wobble. If you don't have another, do you have a friend with a known good blade that you can install on your saw to check. Just a thought
Ed
RE: Can table saw wobble be corrected? - Scott W - 08-04-2017
Here are a couple videos indicating my findings regarding the blade run out. I had taken off the arbor washers and they mate perfectly with no light saying in between them. I am not sure where to go from here. Again, I'd like to keep the saw and make it work BUT not for an unreasonable cost of money or time.
I did mark the high and low spots on both sides of the blade, they are not exactly the same but a reasonably close to the same. Also, I have tried a couple different blades and they both seem to do the same thing. Am I to assume that the bearings are garbage? I don't know if it matters, but when you turn the saw offthe blade runs or spins for a long time.
Any thoughts?
https://youtu.be/4rrkZ8154hE
https://youtu.be/0b5XYuBnXhk
https://youtu.be/5Wx8durbvmU
RE: Can table saw wobble be corrected? - Steve N - 08-04-2017
Quicker yet to see if your blade has movement, just make a cut. Take a piece of scrap, push it through with the miter gauge and cut it completely at a dead 90*. Turn off the saw. Without moving anything rejoin both sides of the cut. Is there a gap? Now flip one piece over don't move it, just flip it, so what had been on the table is now up in the air. Rejoin the cut, is there a gap? If you do that and get no notable gap, you don't have anything to worry about with the arbor. I'd just change the blade, and see if things look better. Not the blade, or caked dirt/dust/pitch, I'd start looking for a different saw. Repair is likely going to be more than value.
I've seen blades run that I was sure there was wobble, yet the saw made square cuts, which it couldn't do with a wobble. Optical illusion? Not sure of the term to use, but nothing was wrong, now if the saw is making crappy cuts, and you have tried more than 1 blade. I usually try 3. Consider it's not a high end saw, I suppose you have to choose if goofy cuts, which are also likely unsafe at some level, are acceptable to spending more $$$ for a better saw. Not sure what your market is, but here you can buy Sears .113 saws all day for a hunnert bux.
RE: Can table saw wobble be corrected? - JGrout - 08-04-2017
I have a suspicion that the wobble that has him concerned is from a somewhat ragged edge cut or cross cut leaving marks on the stock
There are ways to determine the runout of an arbor , even a sawblade.
putting two loose washers together that show no light is pretty much going to show nothing.
RE: Can table saw wobble be corrected? - Scott W - 08-04-2017
Steve N, ironically I sent an email today on a Sears 113 series....
JGrout, what made me curious was that I actually saw the wobble before I cut. I got this thing free so there was really no I section other the flipping the on off switch to see it run. I got the washer idea from woodgears.ca....although you suggest it wouldn't matter, seems to me if one of the washers that holds the blade was warped or had a burr or whatever, thay could in fact effect the trueness of the blade it held.
RE: Can table saw wobble be corrected? - JGrout - 08-04-2017
That is somewhat true but you need to understand that the motor side washer has TWO surfaces that matter just because the blade surfaces mate you still have no idea if the inside and outside are parallel
As to your observation I am less concerned with start up wobble unless it appears in the cuts and is pretty noticeable
If that is indeed the case I suppose short of tearing it all apart you need some verifiable way to safely determine where the issue lays
Bearings, arbors, washers, motor mounts even the blade are suspect; you have to narrow it down
or live with it
Joe
RE: Can table saw wobble be corrected? - Steve N - 08-05-2017
(08-04-2017, 10:38 PM)JGrout Wrote: As to your observation I am less concerned with start up wobble unless it appears in the cuts and is pretty noticeable
Joe
Joe that was why I went the direction I did, he saw it. If seeing it, and it still makes square cuts it's just some type of illusion, could be a blade change could make it go away. Can't fix a square cut
Figured it would be 2 minutes and a piece of 1x scrap, maybe 3" wide to find out. Most of the previous suggestions may find something "IF" there was a problem. My thought there, is it worth the price to do a fix? Some old tools are just destined to be scrap?
RE: Can table saw wobble be corrected? - fixtureman - 08-05-2017
Wouldn't the wobble just make a wider kerf like a wobble dado blade
RE: Can table saw wobble be corrected? - JGrout - 08-05-2017
(08-05-2017, 12:33 PM)fixtureman Wrote: Wouldn't the wobble just make a wider kerf like a wobble dado blade
That is one thing it may do
Another is it will leave saw tracks on the cut material
It can also be a potential place for kickback if the stars align.
Wobble is neither simple nor easy to nail down without further testing
RE: Can table saw wobble be corrected? - Scott W - 08-05-2017
Moot point now. I brought home a USA made Delta. Will post pics soon.
Thanks for the advice.