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80 tooth blade question

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Forum topic by Chris Cook posted 07-16-2017 08:20 PM 450 views 0 times favorited 14 replies Add to Favorites Watch
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Chris Cook

252 posts in 1974 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, “as soon as you come up with something foolproof, they come up with a better fool""


14 replies so far

View Loren's profile

Loren

8978 posts in 3341 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

8179 posts in 2535 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

15580 posts in 1549 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

4305 posts in 2044 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

7256 posts in 1179 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 M's profile

Rick M

9796 posts in 2073 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

7663 posts in 3068 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

3268 posts in 2469 days


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

Dull blade?

-- David in Damascus, MD

View Bluenote38's profile

Bluenote38

47 posts in 81 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.

View Redoak49's profile

Redoak49

2570 posts in 1681 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

252 posts in 1974 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, “as soon as you come up with something foolproof, they come up with a better fool""

View DocSavage45's profile

DocSavage45

8179 posts in 2535 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

252 posts in 1974 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, “as soon as you come up with something foolproof, they come up with a better fool""

View DocSavage45's profile

DocSavage45

8179 posts in 2535 days


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

LOL! HA HA HA!

-- Cau Haus Designs, Thomas J. Tieffenbacher

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