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Best TS Blade for cutting miter keys?

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Forum topic by Tom148 posted 05-08-2012 01:53 AM 1242 views 0 times favorited 7 replies Add to Favorites Watch
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Tom148

39 posts in 1008 days


05-08-2012 01:53 AM

Topic tags/keywords: table saw blades flat bottom kerf miter keys

I am looking for recommendations for the best blade to cut miter keys. I have been working on boxes and don’t like the kerf angles left by my current blade. So I’m interested to hear who is using what to get flat kerfs.

-- Tom


7 replies so far

View DKV's profile

DKV

3194 posts in 1248 days


#1 posted 05-08-2012 02:31 AM

The Woodworker II box joint blade was designed specifically for cutting flat bottom box/finger joints and spline kerfs. The model number is ww10401125, special #1 OD grind. It works great.
Don

-- Have fun and laugh alot. Life can end at any moment. You old guys out there know what I mean...

View knotscott's profile

knotscott

5600 posts in 2119 days


#2 posted 05-08-2012 04:10 AM

Only a blade with a flat top grind (FTG) will leave truly flat bottoms. Most FTG blades are 18 to 24T rip blades, but as DKV mentioned there are some specialty blades for finger joints that should also work well….Forrest, Infinity, Freud, Oshlun, and others offer them.

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

View floridagramps's profile

floridagramps

21 posts in 2135 days


#3 posted 05-08-2012 07:50 AM

why not try the outside cutter from dado set which should provide a flat bottomed 1/8 inch cut. Then buy 1/8 inch thick contrasting wood from woodcraft or rockler for use as keys?

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knotscott

5600 posts in 2119 days


#4 posted 05-08-2012 10:37 AM

FG – Most dado sets use an outside cutter with a beveled top grind.

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

View gfadvm's profile

gfadvm

11478 posts in 1434 days


#5 posted 05-09-2012 02:57 AM

I really like my Freud box cutter set: very sharp,no tearout, and has shown no signs of dulling after over a year of use. Well worth the $100 (and I am a really cheap guy!)

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

View Loren's profile

Loren

7821 posts in 2391 days


#6 posted 05-09-2012 04:22 AM

You can get any old carbide blade reground for probably about
the cost of a sharpening. It’s easier for the guy doing the
grinding actually because he just grinds them all flat across
in one setup.

-- http://lawoodworking.com

View Tom148's profile

Tom148

39 posts in 1008 days


#7 posted 05-09-2012 12:42 PM

Thanks everyone.

I went ahead and bought a FTG Frued ripping blade. We’ll see how that works.

I like the idea of re-purposing an older carbide blade for this application. I have an older sears 40 tooth that might be just the ticket. This is a light duty shallow depth application and won’t benefit much from the modern coatings etc.

Thanks again for the good comments.

-- Tom

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