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Flatness of a table saw table: How perfect should it be?

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Forum topic by Nashvillian posted 06-15-2021 11:53 PM 365 views 0 times favorited 5 replies Add to Favorites Watch
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Nashvillian

24 posts in 82 days


06-15-2021 11:53 PM

I was using a digital level on my table saw’s table today and, in addition to a 0.00 reading in a place or two, I was getting readings of around 0.34, 0.80, things like that; virtually all less than one degree.

Should I expect 0.00 everywhere? Is that what most people get or is that unrealistic? How much variation is acceptable?

Thanks in advance!


5 replies so far

View Aj2's profile

Aj2

3955 posts in 2963 days


#1 posted 06-16-2021 12:18 AM

That doesn’t sound too bad but I’m not really familiar with that approach to checking flatness of a saw top.
I like to use a short precision straight edge and feeler gauges.
The real proof is squaring the blade checking both side and splitting the difference. A reliable square is a good idea .
Then make a couple cuts and check the results.
Good Luck

-- Aj

View Dave Mills's profile

Dave Mills

87 posts in 564 days


#2 posted 06-16-2021 01:09 AM

I haven’t heard of anyone using a level on a tablesaw to determine flatness. I suppose conceptually it could work, but flat is what you want (i.e. all readings the same, whether they’re zero or not), not particularly worried about level (zero). I’d go to the straightedge method, frankly.

-- Dave

View Madmark2's profile

Madmark2

2973 posts in 1753 days


#3 posted 06-16-2021 02:00 AM

Put the toys away and start cutting. If its clean then who cares? Do not go looking for problems unless you can connect it to a known cut issue. If it cuts clean and square leave well enough alone.

It has never occurred to me to test for flatness. My saw looks flat and cuts clean so why bother?

-- The hump with the stump and the pump!

View pottz's profile

pottz

18881 posts in 2149 days


#4 posted 06-16-2021 02:08 AM



Put the toys away and start cutting. If its clean then who cares? Do not go looking for problems unless you can connect it to a known cut issue. If it cuts clean and square leave well enough alone.

It has never occurred to me to test for flatness. My saw looks flat and cuts clean so why bother?

- Madmark2


i dont agree with the mad man often but this time i stand behind him,too many worry about too much,just cut some wood.unless your a pro doing high end work it really wont matter !

-- working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.

View SMP's profile

SMP

4459 posts in 1070 days


#5 posted 06-16-2021 03:25 AM

Less than 1 degree? I don’t even know what that means…is your floor level? I’ve only ever used standard machinist methods to measure flatness of something but never bothered with my TS

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