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How Long should a 10 inch 60 tooth carbide saw blade last?

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Forum topic by DocSavage45 posted 02-29-2016 12:41 AM 1750 views 1 time favorited 84 replies Add to Favorites Watch
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DocSavage45

7705 posts in 2308 days


02-29-2016 12:41 AM

Topic tags/keywords: question tip tablesaw blade sharpening

Hey LJ’s!

I just replaced my 40 tooth carbide blade in my Cabinet saw. I was cutting 45 degree miters on my table saw in pine. I noticed the blade burning the wood. Took it out and used a soft wire brush on the teeth and it seemed to work OK. I then took some oven cleaner and gave the blade a degunking.

I was cutting a 1 and 3/4 inch thick walnut board. Attempting to square it up and the piece started smoking? So I replaced the 60 tooth with a 40 tooth that I had on hand. The Kerf is half as thick?

Wondering how long (hours ) you might use a blade? After that what steps do you take? I have a few blades that I was thinking could be sharpened, but I live in a pretty rural area.

I appreciate your sharing your thoughts and experiences.

Tom

-- Cau Haus Designs, Thomas J. Tieffenbacher


84 replies so far

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a1Jim

115202 posts in 3042 days


#1 posted 02-29-2016 12:57 AM

Hey Tom
Blade life differs according to what material your cutting and how much and how good a blade you have.Keeping blades clean makes a big difference. I have some blades that are well over 10 years old,of course I’ve had them resharpened a number of time. I’ve read the oven cleaner eats up carbide ,I use wash soda to clean my blades and router bits

-- http://artisticwoodstudio.com Custom furniture

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joey502

487 posts in 983 days


#2 posted 02-29-2016 01:00 AM

60 teeth is a lot for a board 1 3/4 thick. The 40T cut much better I am guessing? Soft woods tend to gunk up blades quicker than harwood, in my experience anyway.

I only use 3 blades as a general rule. A thin kerf Freud Fusion 40T combo blade that cuts both rips and crosscuts well, but not great. A thin kerf 24T Freud industrial rip blade I use for ripping anything over an inch thick. The 3rd is a 40T Diablo blade from HD that I use on plywood. I clean them every time they come out of the saw. A clean blade will cut better and last longer.

Do not use a metal bristle brush on the carbide teeth. It can damage them.

To clean the blade I use regular 409 and a plastic bristle brush I bought at the box store. I lay the blade in a plastic pan you would drain a car’s oil into spray the 409 around the blade and brush the gunk off. It is very little work if you clean the often. I do the same for router bits.

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DocSavage45

7705 posts in 2308 days


#3 posted 02-29-2016 01:09 AM

Jim,

I think I got the oven cleaner tip from Charles? LOL! Hdn’t hear any negative about it.

Thanks for your input.

-- Cau Haus Designs, Thomas J. Tieffenbacher

View PhilBello's profile

PhilBello

390 posts in 1432 days


#4 posted 02-29-2016 01:10 AM

Hi Tom, if your timber is dry, you shouldn’t be having any problem, I certainly wouldn’t use oven cleaner if your blades are carbide tipped, it is reknowned for damaging them.
As for sharpening saw blades, why not do your own, I have used John Heisz' method and it works, there are others on YT, might save you a trip and a few bob (sorry dollars!!!...lol ).
I now use an 80T thin kerf for all my cuts and have no problems, not strictly right, but it works for me.

-- If you want the rainbow, you got to put up with the rain - Steven Wright

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DocSavage45

7705 posts in 2308 days


#5 posted 02-29-2016 01:12 AM

Joey,

I had used this blade in ripping /truing up my rough chainsaw lumber. Of course it was much greener at the time but I didn’t notice any issues.

Would a gummed up blade burn on a 45 degree miter cut?

Thanks for your input

-- Cau Haus Designs, Thomas J. Tieffenbacher

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b2rtch

4822 posts in 2514 days


#6 posted 02-29-2016 01:14 AM

For years I clean my blades using straight and cheap ammonia, it works like charm.

-- Bert

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DocSavage45

7705 posts in 2308 days


#7 posted 02-29-2016 01:16 AM

Phil,

How are you feeling?

Two “Do not use oven cleaner!” No more! Looking at the harbor frieght circular saw sharpener. It’s sold on Amazon (chicago brand) Also have seen a YouTube video on it. Well done on strenghts and weakness of the tool. Will check out John Hieisz.

Thanks!

-- Cau Haus Designs, Thomas J. Tieffenbacher

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DocSavage45

7705 posts in 2308 days


#8 posted 02-29-2016 01:18 AM

Bert,

I just bought some. LOL!

I have other dirty blades to test out.

Thanks!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View gfadvm's profile

gfadvm

14940 posts in 2155 days


#9 posted 02-29-2016 01:19 AM

A dirty blade will burn wood and cut poorly. I use purple formula Simple Green to clean all my blades as well as my drum sander paper. I soak em for 24 hours and the hose them off with the pressure nozzle on the water hose. Rarely need to brush at all.

I send my blades out to be sharpened (even the cheap Diablo blades can be resharpened.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

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DocSavage45

7705 posts in 2308 days


#10 posted 02-29-2016 01:22 AM

Andy,

I’ve heard good things about it.

When you say “sent out,” are you mailing them?

Thanks

-- Cau Haus Designs, Thomas J. Tieffenbacher

View joey502's profile

joey502

487 posts in 983 days


#11 posted 02-29-2016 01:29 AM

I send my blades to a sharpening service. Mailing them is an option since you are in a more rural area.

View jbay's profile (online now)

jbay

816 posts in 364 days


#12 posted 02-29-2016 02:02 AM

It’s hard to say how long a blade should stay sharp. Just got to go with your experience using that blade.
Kind of like keeping a mental worksheet on how good it cut when you first got it and compared to how it’s cutting when you think it’s getting dull, then weigh that out against how much material you think you’ve cut.
I can usually tell when the material I’m cutting is getting harder to push through the saw than normally.
I always have them sharpened by professional sharpening companies.
You’ll get a way better sharpen than if you did it yourself. Blades will last much longer between sharpening.
They can fix chipped teeth if you have any. It will keep your blades true.

EDIT: Unless I’m cutting a lot of soft wood like pine, my blades get dull before the teeth get a build up of pitch on them. I never have to clean them, I just send them out. I probably would get a little more out of them if I did, but it’s not worth the time for me.

-- My “MO” involves Judging others, playing God, acting as LJs law enforcement, and never admitting any of my ideas could possibly be wrong or anyone else's idea could possibly be correct -- (A1Jim)

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gfadvm

14940 posts in 2155 days


#13 posted 02-29-2016 02:05 AM

Tom, I take mine to a place in Tulsa (but I see a lot of blades of all kinds that have been sent to them from all over). UPS/Fed X/etc.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View Monte Pittman's profile

Monte Pittman

22025 posts in 1803 days


#14 posted 02-29-2016 02:10 AM

My 40T blades get tortured. So not a good gauge to go by. Lots of rough lumber, tree bark and anything stuck to through it. My 60T & 80T blades I have had for years.

-- Mother Nature created it, I just assemble it.

View conifur's profile

conifur

955 posts in 617 days


#15 posted 02-29-2016 02:13 AM

I have not taken the time to read any post here, my uncle in the 50s and 60s used to get Popular Mechanics and Science, the back page always had an advertisement for a carburetor for your car, ”’30 days on a tank of gas”’ as he said I can get 6 months on mine if I dont drive it!!!!!!!!!!!!
I have gone through a Freud cutting Brazilian Cherry hard wood flooring in 2 days, regular hard woods depending on projects and use 6 -12 months at the least.

-- Knowledge and experience equals Wisdom, Michael Frankowski

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