Table Saw niggle

[SteveF]

When ripping timber (any) I am getting an annoying chatter on what I think is my riving knife (only start noise once past blade)
This is a new thing and nothing has changed on my machine
I have checked:
mitre slot to fence
mitre slot to blade
blade to fence
straight edge along teeth of saw to both sides of riving knife and it does not touch
blade has not changed, riving knife original and tight
if I stop the saw mid cut it is also not touching knife
so maybe it is something else causing the change in tone?
the blade is quite new and I checked all teeth
I do not have a short fence (I know I should get around tuit)
this is a wadkin 10ags so fence is not flexing
the cut is not terrible for a rip blade, but every now again I do get a maybe .5mm deep saw cut mark which I suspect is technique
anything else to look for?

Steve

 

[Seiken]

Drive belt tension?

 

[sunnybob]

You didnt mention the blade itself.
Take it off, clean the bolt, blade, and any spacer, and reassemble to the correct torque, see if that makes it go away.

 

[Ttrees]

I noticed I was getting saw marks using the original table insert as it was a step lower than the table.
I could not find the correct allen key to set it level with the top, so I made my own.
I suppose the zero clearance may help also ?

Tom

 

[SteveF]

I noticed I was getting saw marks using the original table insert as it was a step lower than the table.
I could not find the correct allen key to set it level with the top, so I made my own.
I suppose the zero clearance may help also ?

Tom

I was tempted to make my own too
but looked a bit complicated..which is a shame as I have a 12" blade that a couple of times would have been useful

Steve

 

[Ttrees]

Nothing complicated about it if you can cut and surface your own blank.
Can you not trace it around the old one, stick it in, sit your fence on one edge
and rise your blade up to cut through the insert for that zero clearance.

Tom

 

[Racers]

Dirty blunt blade, I have had the same problem my self, if you look closely the blade vibrates causing the noise and marks.


Pete

 

[SteveF]

I wish I could just pretend I never started this thread :-(
schoolboy error to say the least
I double checked everything and followed all suggestions
penny dropped suddenly and with a massive thud
blade was raised to full height, what was I thinking
lowered to suitable height for stock...all ok now

Steve

 

[sunnybob]

The ability to admit youre a fool is a virtue.

 

[Ttrees]

Should make no difference atall, what height your blade is set to.
As mentioned earlier the blade/flanges/nut is probably dirty/gritty/corroded.
I could not set up my saw at first because of this, and went over and over, trying to align my blade to the miter slots in vein.
It took a lot of adjustments to realise that the fence rails was actually about right, all the while I had thoughts of a damaged arbor in the back of my head.
This makes a HUGE difference!
Do yourself a favour and give the blade, flanges and nut a few seconds lapping on a plate.
Remember though, that the flanges are supposed to be proud only on the edges, as when you tighten the arbor nut the flanges compresses slightly.
Good luck
Tom

 

[ColeyS1]

This sounds the same issue as what I had. It took ages to finally figure out what was causing it. It turned out it was caused by tilting the blade over, and the guides not being kept clean/lubricated. Instead of the whole thing tilting freely, the front and back of the blade were tilting and sticking differently. This gave the illusion the fence wasn't set up parallel to the saw blade. Lowering the blade seemed to make it better.The issue was still there, it was just less noticeable. The saw now gets a clean and lubricating every 3 months (instead of yearly service) and the issue is now gone.
Might be worth checking.

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