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80 tooth blade question

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Forum topic by Chris Cook posted 07-16-2017 08:20 PM 536 views 0 times favorited 14 replies Add to Favorites Watch
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Chris Cook

276 posts in 2034 days


07-16-2017 08:20 PM

I have an 80 tooth blade (10”) for my tablesaw that I bought for the fine cuts. However, no matter the thickness, I get much burning. Today I was cross-cutting at 1/4 thick boards and the burning was significant.

The saw has a 13 amp, 1HP motor. Is this a problem where I need more power to get good cuts with this fine of a blade?

TIA

-- Chris, "all we are is sawdust in the dust collector""


14 replies so far

View Loren's profile

Loren

9290 posts in 3401 days


#1 posted 07-16-2017 08:25 PM

Your blade may be “heeling” out of alignment
with the miter slots.

You’ll get the best cut geometry with the blade
cranked up a bit. This makes the tooth path
closer to vertical, like a band saw, than horizontal.

View DocSavage45's profile

DocSavage45

8246 posts in 2596 days


#2 posted 07-16-2017 08:40 PM

More information would be helpful. New blade? Who’s blade? (maker) do you experience a similar rpoblem with a 60 tooth blade. Is your fence in alignment from front to back of the blade? Don’t ask me how I know. LOL!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View firefighterontheside's profile

firefighterontheside

16233 posts in 1610 days


#3 posted 07-16-2017 08:43 PM

Blade on backwards or not in line with fence or miter gauge.

-- Bill M. "People change, walnut doesn't" by Gene.

View bondogaposis's profile

bondogaposis

4367 posts in 2104 days


#4 posted 07-16-2017 09:33 PM

The first thing is to check for alignment with the miter slot. Is the blade dull, resin build up?

-- Bondo Gaposis

View TheFridge's profile

TheFridge

7729 posts in 1239 days


#5 posted 07-17-2017 02:51 AM


Blade on backwards

- firefighterontheside

That would be awesome.

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

View Rick.'s profile

Rick.

10085 posts in 2133 days


#6 posted 07-17-2017 03:41 AM



Blade on backwards…
- firefighterontheside

+1
If you are burning 1/4” wood

If it isn’t backwards, feed rate is too slow.

-- http://thewoodknack.blogspot.com/

View knotscott's profile

knotscott

7710 posts in 3129 days


#7 posted 07-17-2017 09:56 AM

Likely an alignment issue, or problem with the blade…..dull, dirty, defective, etc. Since they’re not all created equal, it’d help to know the brand and model of the blade. Any chance the arbor nut is so tight that it’s distorting the blade?

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View dbray45's profile

dbray45

3288 posts in 2530 days


#8 posted 07-17-2017 11:21 AM

Dull blade?

-- David in Damascus, MD

View Bluenote38's profile

Bluenote38

157 posts in 142 days


#9 posted 07-17-2017 12:36 PM

I’ve found that at 40T (sharp) Forrest blade cuts anything with an almost glass finish (1/8” – 3-1/2”). I pitched the 60T – it never gave a really good cut. To prevent/reduce tear out on plywood I run tape down the cutline.

-- Bill - Rochester MI

View Redoak49's profile

Redoak49

2711 posts in 1742 days


#10 posted 07-17-2017 01:13 PM

I only use an 80 tooth blade for plywood. I think a 40-60 tooth blade works better and tooth geometry is most critical.

It is worthwhile for new people to read up on the tooth design of several different brands. I am using a hi-ATB blade for cross cuts on hardwood and get a perfect cut.

View Chris Cook's profile

Chris Cook

276 posts in 2034 days


#11 posted 07-17-2017 10:59 PM

Thanks for all the replies:

Blade on backwards: No, I’ve done some screwy stuff, but not that screwy (yet)
It’s an almost unused blade: Lifetime carbide 38544
https://www.kvmtools.com/lifetime-carbide-38544-10-in-80t-finishing-circular-saw-blade.html

It is bolted in tight and snug, too tight? Maybe so!
Using miter sleds that are pretty darn well aligned as well as a fence that is always questionable. Seeing the burning on both.

Maybe I should just give up on getting a better cut with an 80T and just use my 40Ts based on the comments here?

Anybody want a good deal on an 80T blade?

-- Chris, "all we are is sawdust in the dust collector""

View DocSavage45's profile

DocSavage45

8246 posts in 2596 days


#12 posted 07-17-2017 11:14 PM

Chris, I have some lifetime carbide blades. Bought a number of them from Harbor Frieght. The thin kerf blade worked well. The 80 tooth was thicker and not well balanced and had harmonic problems. I don’t experience that kind of problem with my Freud blades. Worked ok in my compound miter saw.

-- Cau Haus Designs, Thomas J. Tieffenbacher

View Chris Cook's profile

Chris Cook

276 posts in 2034 days


#13 posted 07-18-2017 12:57 AM



Chris, I have some lifetime carbide blades. Bought a number of them from Harbor Frieght. The thin kerf blade worked well. The 80 tooth was thicker and not well balanced and had harmonic problems. I don t experience that kind of problem with my Freud blades. Worked ok in my compound miter saw.

- DocSavage45

You know I noticed this blade rings like French Cathedral bell!

-- Chris, "all we are is sawdust in the dust collector""

View DocSavage45's profile

DocSavage45

8246 posts in 2596 days


#14 posted 07-18-2017 01:07 AM

LOL! HA HA HA!

-- Cau Haus Designs, Thomas J. Tieffenbacher

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