Thin kerf blades

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Forum topic by zipmac22 posted 02-18-2016 05:48 AM 937 views 0 times favorited 12 replies Add to Favorites Watch
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20 posts in 820 days

02-18-2016 05:48 AM

When you use a thin kerf blade, do you have to use some kind support disc to help give it extra support? I thought I remember reading that a thin kerf blade is too thin and needed the extra support to prevent any kind of wobble. But, if an extra support disc is needed won’t that lessen the depth of the cut?

12 replies so far

View runswithscissors's profile


2725 posts in 1992 days

#1 posted 02-18-2016 05:54 AM

In my experience, TK blades do not need the extra support. Others may disagree. And yes, you’re right, you would lose some depth of cut.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View knotscott's profile


7980 posts in 3343 days

#2 posted 02-18-2016 10:31 AM

A good quality well balanced blade that’s mounted to an arbor that’s spinning true shouldn’t need a stabilizer disk. More often than not, they don’t offer an improvement. Avoiding poorly made cheap thin kerf blades is key. Sometimes in extreme cases of very tough wood with twisting grain like mesquite they can have some benefit. If there’s excessive runout on the arbor or the saw has excessive vibration the disks may help, but note that they’re more of a bandaid at that point….better to find the cause and fix that.

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

View HokieKen's profile (online now)


4742 posts in 1106 days

#3 posted 02-18-2016 11:57 AM

runswithscissors and knotscott are right on. I use thin kerf blades on my TS and have never needed a support disk. My blades are Freud so you don’t have to buy really expensive blades, but like knotscott said, you do need to avoid the cheap ones.

-- Kenny, SW VA, Go Hokies!!!

View MadMark's profile


979 posts in 1420 days

#4 posted 02-18-2016 02:43 PM

Never needed anything to get perfect cuts on my Freud LU83 10” 50T Thin Kerf blade.


-- Madmark -

View Jim Finn's profile

Jim Finn

2647 posts in 2889 days

#5 posted 02-18-2016 02:56 PM

I use a cheap Diablo thin kerf 24 teeth blade that gives me jointer quality cuts. I use my miter saw for cross cuts.

-- Website is

View ChrisK's profile


1946 posts in 3049 days

#6 posted 02-18-2016 03:14 PM

I use a support plate because I have it. Now I will have to try a few cuts with out the plate to see if I notice a difference. I use Freud blades as well. Very nice cuts and long last edge.

-- Chris K

View Julian's profile


1308 posts in 2658 days

#7 posted 02-18-2016 03:22 PM

I have been using a thin kerf Forrest WWII blade for well over 10 years without any support discs. Cuts are smooth and no issues, regardless of the type of wood I have cut.

-- Julian

View ThomasChippendale's profile


244 posts in 899 days

#8 posted 02-18-2016 03:44 PM

We had thin kerf blades on our resawing operations 30 years ago , they went through 1,000,000 bd ft of maple a year, saving 1/32 of an inch was meaningfull even then.

-- PJ

View sawdust703's profile


270 posts in 1387 days

#9 posted 02-20-2016 02:05 AM

I use nothing but TK blades on my 8” craftsman TS. I’ve never used support discs. The blades I use are Freud Diablo. I’ve never had any problems. I cut mostly rough cut lumber with these blades.

-- Sawdust703

View John's profile


243 posts in 1549 days

#10 posted 02-20-2016 02:23 PM

I think the blade stabilizers for thin kerf bladed are just clever marketing. I use thin kerf and have never felt a need for a stablizer.

-- I measured once, cut twice, and its still too short...

View 716's profile


502 posts in 884 days

#11 posted 02-20-2016 02:50 PM

Here is some good article about stabilizers if you can read between marketing pitch.

-- It's nice!

View 716's profile


502 posts in 884 days

#12 posted 02-21-2016 05:58 AM

In my experience, TK blades do not need the extra support. Others may disagree. And yes, you re right, you would lose some depth of cut.

- runswithscissors

Just take the stabilizer off on those rare occasions when you need full 3” deep cut. I do not understand why people make problem of it.

-- It's nice!

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