Thin kerf blade or full kerf

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Forum topic by robdem posted 07-23-2012 02:41 PM 3888 views 0 times favorited 9 replies Add to Favorites Watch
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377 posts in 2026 days

07-23-2012 02:41 PM

Need some help and advice need to buy new saw blade for my 12 inch dewalt miter saw .Have read some where that full kerf blades are better on miter saws then thin . Local tool dealer said same thing as he tried to sell me a 140 dollar blade made by AGE 100 tooth . thanks for any and all help and advice

9 replies so far

View knotscott's profile


7145 posts in 2795 days

#1 posted 07-23-2012 02:51 PM

The larger the span the greater chance of deflection. For a 12” crosscut blade, I’d stick with 1/8” full kerf… crosscutting takes less power than ripping, so there’s less incentive to use thin kerf. I’d use 3/32” thin kerf for ripping with smaller table saws and smaller diameter blades. You don’t need to spend $140 to get a good blade… around….Infinity, Forrest, Freud Industrial, CMT, Ridge Carbide, Tenryu, Delta Industrial, Leitz, Oshlun, Onsrud. I’d also suggest a blade with no more than 10° hook angle for a standard miter saw…..less than 5° for a slider.

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

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Fred Hargis

3842 posts in 1913 days

#2 posted 07-23-2012 03:14 PM

Seems to me that miter saw blades will deflect slightly, especially when edge trimming. That may be the source of the recommendation to which you refer. Even so, on a 10” saw I use a TK just because it’s not the most powerful saw on the market (mine’s a Dewalt 703). But with a 12” I would think you would have no problem with a full kerf, and like Scott said, there are a lot of good blades on the market that don’t cost $140. If you do decide to go with a TK, check Lowes, they have some CMT blades (one of them is 12”) on clearance. It may be just what you want.

-- Our village hasn't lost it's idiot, he was elected to congress.

View BlankMan's profile


1488 posts in 2773 days

#3 posted 07-23-2012 03:56 PM

I always stick with full kerf for all my saws, I like the rigidity and it seems the carbide tends to be thicker on full kerf blades which means it can be sharpened more times. That is a key factor when I purchase blades.

I’m using a Freud LU80R012 for finish cuts on my miter saw, I was so impressed with that blade that I bought one for my RAS also. It was I think around $125 at Woodcraft and they didn’t have it in the store so had to order it. But, I always wait till they have a %10 or %15 off sale on everything then buy it then. Woodcraft has a %15 off sale coming up on July 27th & 28th.

-- -Curt, Milwaukee, WI

View MonteCristo's profile


2098 posts in 1608 days

#4 posted 07-23-2012 04:05 PM

I’d agree with knotscott except that I don’t go for the really low hook angle blades on a sliding miter saw. It’s true these blades are “safer” because they cut less aggressively but I find they go dull too darn quikely for my liking and the extra care I take with a normal hook, knowing that the blade is cutting more aggrsively, pays off with much longer time between sharpenings.

-- Dwight - "Free legal advice available - contact Dewey, Cheetam & Howe""

View pintodeluxe's profile


4825 posts in 2233 days

#5 posted 07-23-2012 04:26 PM

I have run both thin kerf and full kerf on my 12” Dewalt. They both work fine, but you do want to cut a little slower with a thin kerf blade to avoid deflection. Since I do mostly fine trim work anyway, the thin kerf works great for me. The Diablo blades are cheap and widely available. Splinter-free cuts for sure.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View cutworm's profile


1075 posts in 2213 days

#6 posted 07-24-2012 02:20 AM

I bought 3 of the CMT’s. 10, 12 and 7 1/4”. Like them all. Especially the 10” 50t I got for the tablesaw. The kerf on the 12” 96t is a little bigger than I thought it would be. Haven’t seen any issues yet with deflection. I have a couple of Oshlun blades and like them. They are full kerf but not a real aggressive hook as I recall.

-- Steve - "Never Give Up"

View Fred Hargis's profile (online now)

Fred Hargis

3842 posts in 1913 days

#7 posted 07-24-2012 11:43 AM

Cutworm, I picked up the CMT 10” 50 tooth for my miter saw, and really like it as well. I may buy another, since they are down to about the cost of a resharpening.

-- Our village hasn't lost it's idiot, he was elected to congress.

View kizerpea's profile


774 posts in 1787 days

#8 posted 07-24-2012 12:24 PM

there u have it….full kerf.. what i think too


View robdem's profile


377 posts in 2026 days

#9 posted 07-24-2012 02:51 PM

Thanks for all the info looks like i’am going to lowes to look for some cmt blades. Going to look for some full kerf blades.

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